Computer Associates eTrust InoTask.exe Antivirus Buffer Overflow Vulnerability

[binagres@xxxxxxxxx]

Hi, 

Here binagres aka (...), for all the "vinagreta" : 
       ----------------------------------------------------------------------
      | 48Bits Advisory -=- Privilege Elevation in eTrust Antivirus Agent r8 |
       ----------------------------------------------------------------------

 Affected versions :

        - eTrust Antivirus Agent r8 - 
http://www3.ca.com/solutions/Product.aspx?ID=156
                                   (With INOCORE.DLL 8.0.403.0) under XPSP2 and 
W2KSP4)

 Description :

        eTrust Antivirus r8 is prone to a stack-based buffer overflow 
vulnerability.

        The Affected component is "eTrust Task service" running as a Windows 
service, 
        the executable file is located at:

        "%PROGRAMFILES%\CA\eTrustITM\InoTask.exe"

        eTrust Task service uses a shared file mapping named "INOQSIQSYSINFO" 
as an 
        IPC mechanism, this file mapping have a NULL security descriptor so 
anyone 
        can view/modify it. This mapping contains information about scheduled 
tasks,
        including a field where is specified the file job´s path.

        The vulnerable code is located at IN0CORE.DLL in the function 
QSIGetQueueID 
        which internally calls QSIGetQuePath passing a fixed buffer in order to 
        retrieve the queue path, no validation is done for the buffer size.
        
        In order to exploit the vulnerability, malicious users can modify 
directly
        the buffer through the file mapping with a long file path, so when 
InnoTask 
        read it the mentioned stack-based buffer overflow will be triggered.

exploit here : http://www.48bits.com/exploits/etrust.c

Cheers, 

binagres