Pthreads-win32 'quserex.dll' DLL Loading Arbitrary Code Execution Vulnerability

Bugtraq ID:	42899
Class:	Design Error
CVE:
Remote:	Yes
Local:	No
Published:	Sep 01 2010 12:00AM
Updated:	Sep 07 2011 01:10PM
Credit:	Peter Van Eeckhoutte
Vulnerable:	Ross Johnson Pthreads-win32 2.8 Inkscape Inkscape 0.48 r9654 GnuCash GnuCash 2.4.7 r20813
Not Vulnerable:

Pthreads-win32 'quserex.dll' DLL Loading Arbitrary Code Execution Vulnerability

Pthreads-win32 is prone to a vulnerability that lets attackers execute arbitrary code.

An attacker can exploit this issue by enticing a legitimate user to use the vulnerable application to open a file from a network share location that contains a specially crafted Dynamic Link Library (DLL) file.

The following are vulnerable:

pthreads-win32 2.8.0
inksacpe 0.48.0.r966

Other applications that use the vulnerable library may also be affected.

Pthreads-win32 'quserex.dll' DLL Loading Arbitrary Code Execution Vulnerability

Attackers can exploit this issue by tricking a victim into opening a file on a WebDAV or SMB share.

Pthreads-win32 'quserex.dll' DLL Loading Arbitrary Code Execution Vulnerability

Solution:
Currently we are not aware of any vendor-supplied patches. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

Pthreads-win32 'quserex.dll' DLL Loading Arbitrary Code Execution Vulnerability

References:

• Application DLL Load Hijacking (HD Moore)
  
• Exploiting DLL Hijacking Flaws (hdm)
  
• Inkscape Homepage (Inkscape)
  
• Microsoft Security Advisory 2269637 Released (Microsoft)
  
• More information about the DLL Preloading remote attack vector (Microsoft)
  
• Pthreads-win32 Homepage (Ross Johnson)
  
• Flash Player 9 DLL Hijacking Exploit (schannel.dll) ([email protected])
  
• Microsoft Security Advisory (2269637) (Microsoft)