ed0e1e4d44
1979 changes to exploits/shellcodes Couchdb 1.5.0 - 'uuids' Denial of Service Apache CouchDB 1.5.0 - 'uuids' Denial of Service Beyond Remote 2.2.5.3 - Denial of Service (PoC) udisks2 2.8.0 - Denial of Service (PoC) Termite 3.4 - Denial of Service (PoC) SoftX FTP Client 3.3 - Denial of Service (PoC) Silverstripe 2.3.5 - Cross-Site Request Forgery / Open redirection SilverStripe CMS 2.3.5 - Cross-Site Request Forgery / Open Redirection Silverstripe CMS 3.0.2 - Multiple Vulnerabilities SilverStripe CMS 3.0.2 - Multiple Vulnerabilities Silverstripe CMS 2.4 - File Renaming Security Bypass SilverStripe CMS 2.4 - File Renaming Security Bypass Silverstripe CMS 2.4.5 - Multiple Cross-Site Scripting Vulnerabilities SilverStripe CMS 2.4.5 - Multiple Cross-Site Scripting Vulnerabilities Silverstripe CMS 2.4.7 - 'install.php' PHP Code Injection SilverStripe CMS 2.4.7 - 'install.php' PHP Code Injection Silverstripe Pixlr Image Editor - 'upload.php' Arbitrary File Upload SilverStripe CMS Pixlr Image Editor - 'upload.php' Arbitrary File Upload Silverstripe CMS 2.4.x - 'BackURL' Open Redirection SilverStripe CMS 2.4.x - 'BackURL' Open Redirection Silverstripe CMS - 'MemberLoginForm.php' Information Disclosure SilverStripe CMS - 'MemberLoginForm.php' Information Disclosure Silverstripe CMS - Multiple HTML Injection Vulnerabilities SilverStripe CMS - Multiple HTML Injection Vulnerabilities Apache CouchDB 1.7.0 and 2.x before 2.1.1 - Remote Privilege Escalation Apache CouchDB 1.7.0 / 2.x < 2.1.1 - Remote Privilege Escalation Monstra CMS before 3.0.4 - Cross-Site Scripting Monstra CMS < 3.0.4 - Cross-Site Scripting (2) Monstra CMS < 3.0.4 - Cross-Site Scripting Monstra CMS < 3.0.4 - Cross-Site Scripting (1) Navigate CMS 2.8 - Cross-Site Scripting Collectric CMU 1.0 - 'lang' SQL injection Joomla! Component CW Article Attachments 1.0.6 - 'id' SQL Injection LG SuperSign EZ CMS 2.5 - Remote Code Execution MyBB Visual Editor 1.8.18 - Cross-Site Scripting Joomla! Component AMGallery 1.2.3 - 'filter_category_id' SQL Injection Joomla! Component Micro Deal Factory 2.4.0 - 'id' SQL Injection RICOH Aficio MP 301 Printer - Cross-Site Scripting Joomla! Component Auction Factory 4.5.5 - 'filter_order' SQL Injection RICOH MP C6003 Printer - Cross-Site Scripting Linux/ARM - Egghunter (PWN!) + execve(_/bin/sh__ NULL_ NULL) Shellcode (28 Bytes) Linux/ARM - sigaction() Based Egghunter (PWN!) + execve(_/bin/sh__ NULL_ NULL) Shellcode (52 Bytes)
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122 lines
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4 KiB
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#######################################################################
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Luigi Auriemma
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Application: EMC NetWorker (Legato)
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http://www.emc.com/backup-and-recovery/networker/networker.htm
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Versions: <= 7.6 sp3 (7.6.3.2 Build 860)
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Platforms: AIX, HP-UX, Linux, Solaris, Windows
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Bug: invalid read access
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Exploitation: remote
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Date: 14 Mar 2012
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Author: Luigi Auriemma
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e-mail: aluigi@autistici.org
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web: aluigi.org
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#######################################################################
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1) Introduction
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2) Bug
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3) The Code
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4) Fix
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#######################################################################
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===============
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1) Introduction
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===============
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From vendor's homepage:
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"EMC NetWorker backup and recovery software centralizes, automates, and
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accelerates data backup and recovery across your IT environment.
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NetWorker delivers record-breaking performance and a wide range of data
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protection options to safeguard your critical business data."
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#######################################################################
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======
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2) Bug
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======
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nsrexecd is a service listening on some default ports (like 111, 7937
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and 7938) plus another couple of random ones usually over port 8000.
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Through a malformed RPC packet sent to one these random ports it's
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possible to crash the service due to the hash calculation performed
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over an arbitrary amount of data.
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From librpc.dll:
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0038B3CF 8B4424 3C MOV EAX,DWORD PTR SS:[ESP+3C] ; my_size
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0038B3D3 8B6D 00 MOV EBP,DWORD PTR SS:[EBP]
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0038B3D6 2BF0 SUB ESI,EAX
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0038B3D8 897424 38 MOV DWORD PTR SS:[ESP+38],ESI
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0038B3DC 8B33 MOV ESI,DWORD PTR DS:[EBX] ; size
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0038B3DE 8B9C24 90000000 MOV EBX,DWORD PTR SS:[ESP+90]
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0038B3E5 2BF0 SUB ESI,EAX ; size - my_size
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0038B3E7 8B43 10 MOV EAX,DWORD PTR DS:[EBX+10]
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0038B3EA 50 PUSH EAX
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0038B3EB 8D4C24 3C LEA ECX,DWORD PTR SS:[ESP+3C]
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0038B3EF 51 PUSH ECX
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0038B3F0 8D5424 48 LEA EDX,DWORD PTR SS:[ESP+48]
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0038B3F4 52 PUSH EDX
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0038B3F5 2BF7 SUB ESI,EDI
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0038B3F7 53 PUSH EBX
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0038B3F8 897424 54 MOV DWORD PTR SS:[ESP+54],ESI ; the new size
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0038B3FC 896C24 50 MOV DWORD PTR SS:[ESP+50],EBP
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...
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0038AFC5 8D4C24 0C LEA ECX,DWORD PTR SS:[ESP+C]
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0038AFC9 51 PUSH ECX
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0038AFCA 8B4C24 1C MOV ECX,DWORD PTR SS:[ESP+1C]
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0038AFCE 8D5424 0C LEA EDX,DWORD PTR SS:[ESP+C]
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0038AFD2 52 PUSH EDX
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0038AFD3 8B51 04 MOV EDX,DWORD PTR DS:[ECX+4] ; new size
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0038AFD6 8B09 MOV ECX,DWORD PTR DS:[ECX]
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0038AFD8 52 PUSH EDX
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0038AFD9 8B5424 2C MOV EDX,DWORD PTR SS:[ESP+2C]
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0038AFDD 51 PUSH ECX
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0038AFDE 8B48 20 MOV ECX,DWORD PTR DS:[EAX+20]
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0038AFE1 52 PUSH EDX
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0038AFE2 8B50 1C MOV EDX,DWORD PTR DS:[EAX+1C]
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0038AFE5 51 PUSH ECX
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0038AFE6 52 PUSH EDX
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0038AFE7 E8 04E3FFFF CALL LIBRPC.cryptoiface_get_hmac ; hash crash
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Note: after the crash it's necessary to restart also the other services
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so that the situation can return normal and the bug can be tested
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again.
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#######################################################################
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===========
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3) The Code
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===========
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http://aluigi.org/poc/nsrexecd_1.dat
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https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/18601.dat
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nc SERVER PORT < nsrexecd_1.dat
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it's enough to scan all the ports from 8000 to 10000 to catch the
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correct one automatically.
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#######################################################################
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======
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4) Fix
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======
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No fix.
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####################################################################### |