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)
116 lines
No EOL
4 KiB
Text
116 lines
No EOL
4 KiB
Text
#######################################################################
|
|
|
|
Luigi Auriemma
|
|
|
|
Application: Microsoft Reader
|
|
http://www.microsoft.com/reader
|
|
Versions: <= 2.1.1.3143 (PC version)
|
|
the Origami 2.6.1.7169 version doesn't seem vulnerable
|
|
the non-PC versions have not been tested
|
|
Platforms: Windows, Windows Mobile, Tablet PC and UMPC devices
|
|
Bug: writing of NULL byte in arbitrary location
|
|
Date: 11 Apr 2011
|
|
Author: Luigi Auriemma
|
|
e-mail: aluigi@autistici.org
|
|
web: aluigi.org
|
|
|
|
|
|
#######################################################################
|
|
|
|
|
|
1) Introduction
|
|
2) Bug
|
|
3) The Code
|
|
4) Fix
|
|
|
|
|
|
#######################################################################
|
|
|
|
===============
|
|
1) Introduction
|
|
===============
|
|
|
|
|
|
Microsoft Reader is a software needed to read and catalog the ebooks in
|
|
LIT format and the Audible audio books bought via internet, indeed the
|
|
homepage acts also as online store for these protected contents.
|
|
|
|
|
|
#######################################################################
|
|
|
|
======
|
|
2) Bug
|
|
======
|
|
|
|
|
|
Possibility to write a 0x00 byte in an arbitrary memory location.
|
|
From aud_file.dll (base address 5fff0000):
|
|
|
|
5FFF634A >|> 8D47 01 |LEA EAX,DWORD PTR DS:[EDI+1] ; size at offset 0xbd of the PoC
|
|
5FFF634D |. 50 |PUSH EAX
|
|
5FFF634E |. E8 2B470000 |CALL <JMP.&MSVCRT.??2@YAPAXI@Z> ; malloc
|
|
5FFF6353 |. 57 |PUSH EDI
|
|
5FFF6354 |. 50 |PUSH EAX
|
|
5FFF6355 |. FF75 08 |PUSH DWORD PTR SS:[EBP+8]
|
|
5FFF6358 |. 8945 F8 |MOV DWORD PTR SS:[EBP-8],EAX
|
|
5FFF635B |. E8 58460000 |CALL <JMP.&utils.?read_bytes@TypeIO@@SA> ; read
|
|
5FFF6360 |. 8B45 F8 |MOV EAX,DWORD PTR SS:[EBP-8]
|
|
5FFF6363 |. 83C4 10 |ADD ESP,10
|
|
5FFF6366 |. 802438 00 |AND BYTE PTR DS:[EAX+EDI],0 ; place the delimiter (all ok)
|
|
5FFF636A |. 807D FF 00 |CMP BYTE PTR SS:[EBP-1],0
|
|
5FFF636E |. 75 5B |JNZ SHORT aud_file.5FFF63CB
|
|
5FFF6370 |. 8D46 01 |LEA EAX,DWORD PTR DS:[ESI+1] ; size at offset 0xc1 of the PoC
|
|
5FFF6373 |. 50 |PUSH EAX
|
|
5FFF6374 |. E8 05470000 |CALL <JMP.&MSVCRT.??2@YAPAXI@Z> ; now malloc will return NULL
|
|
5FFF6379 |. 8BD8 |MOV EBX,EAX
|
|
5FFF637B |. 56 |PUSH ESI
|
|
5FFF637C |. 53 |PUSH EBX
|
|
5FFF637D |. FF75 08 |PUSH DWORD PTR SS:[EBP+8]
|
|
5FFF6380 |. E8 33460000 |CALL <JMP.&utils.?read_bytes@TypeIO@@SA> ; read
|
|
5FFF6385 |. 802433 00 |AND BYTE PTR DS:[EBX+ESI],0 ; exploitation
|
|
|
|
The first allocation must succeed to avoid problems during the
|
|
reading operations (like memcpy on 0x00000000).
|
|
|
|
Note that is not possible to exploit the visible integer overflow
|
|
caused by malloc(size + 1) because the function that reads the data
|
|
goes in endless loop, yeah bad.
|
|
|
|
The provided proof-of-concept first tries to allocate 0x44000000 bytes
|
|
and it should succeed without problems and then will try to allocate
|
|
the second size that MUST fail so that is possible to use the size
|
|
value as an arbitrary memory offset.
|
|
|
|
Modified bytes in the proof-of-concept:
|
|
000000BD 00 43 ; first size needed to steal memory to the next size
|
|
000000BE 00 FF
|
|
000000BF 00 FF
|
|
000000C0 0A FF
|
|
000000C1 00 61 ; second size, will try to write 0x00 at address 0x61616161
|
|
000000C2 00 61
|
|
000000C3 00 61
|
|
000000C4 16 61
|
|
|
|
|
|
#######################################################################
|
|
|
|
===========
|
|
3) The Code
|
|
===========
|
|
|
|
|
|
http://aluigi.org/poc/msreader_5.zip
|
|
https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/17164.zip
|
|
|
|
|
|
#######################################################################
|
|
|
|
======
|
|
4) Fix
|
|
======
|
|
|
|
|
|
No fix.
|
|
|
|
|
|
####################################################################### |