full-disclosure - Re: Sophos Antivirus Library Remote Heap Overflow

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Date: Sun Aug 28 13:15:21 2005
From: list at rem0te.com (list@...0te.com)
Subject: Re: Sophos Antivirus Library Remote Heap Overflow

You are partially correct. Prior to this advisory, Sophos & rem0te agreed to w/hold details until all fixes were available (August 26th). The Sophos link you provided below does not disclose any details of the vulnerability - only the patch - which leaves a lot of people guessing about the actual vulnerability details.

It's also important to note there are many large 3rd party vendors that sublicense this library who should apply patches to their customer installations. It will be interesting to see how many of these 3rd parties issue advisories to their users.

> -----Original Message-----
> From: Dowling, Gabrielle [mailto:dowlingg@...lcrom.com]
> Sent: Saturday, August 27, 2005 05:09 AM
> To: list@...0te.com, full-disclosure@...ts.grok.org.uk, 
> bugtraq@...urityfocus.com
> Subject: RE: Sophos Antivirus Library Remote Heap Overflow
> 
> Sophos has had a fix for since August 5th...
> http://www.sophos.com/support/knowledgebase/article/3409.htmlj.  The
> vulnerability was also publicly discussed prior to that time.  
> 
> G
> 
> -----Original Message-----
> From: list@...0te.com [mailto:list@...0te.com] 
> Sent: Friday, August 26, 2005 8:36 AM
> To: full-disclosure@...ts.grok.org.uk; bugtraq@...urityfocus.com
> Subject: Sophos Antivirus Library Remote Heap Overflow
> 
> 
> Date
> August 26, 2005
> 
> Vulnerability
> The Sophos Antivirus Library provides file format support for virus
> analysis. During analysis of Visio files Sophos is vulnerable to a heap
> overflow allowing attackers complete control of the system(s) being
> protected. This vulnerability can be exploited remotely without user
> interaction or authentication through common protocols such as SMTP,
> SMB, HTTP, FTP, etc. 
> 
> Impact
> Successful exploitation of Sophos protected systems allows attackers
> unauthorized control of data and related privileges. It also provides
> leverage for further network compromise. Sophos Antivirus Library
> implementations are likely vulnerable in their default configuration.
> 
> Affected Products
> Sophos Antivirus for Windows 2000/XP/2003
> Sophos Antivirus for Windows NT
> Sophos Antivirus for Mac OS X
> Sophos Antivirus for MAC 8/9
> Sophos Antivirus for UNIX/Linux
> Sophos Antivirus for Netware
> Sophos Antivirus for OS/2
> Sophos Antivirus for OpenVMS
> Sophos Antivirus for DOS/Windows 3.1x
> Sophos Antivirus Small Business Edition for Windows
> Sophos Antivirus Small Business Edition for Mac
> PureMessage Small Business Edition 
> PureMessage for Windows/Exchange
> PureMessage for UNIX
> MailMonitor for SMTP - Windows
> MailMonitor for Notes/Domino
> MailMonitor for Exchange
> 
> The Sophos Antivirus Library is also OEM by over 25 other vendors with
> products that are affected by this vulnerability; see the following link
> for a list. There are also several vendors not listed that OEM the
> Sophos Antivirus Library. Refer to Sophos or your vendor for specifics.
> 
> http://www.sophos.com/partners/oem/
> 
> Credit
> This vulnerability was discovered and researched by Alex Wheeler.
> 
> Contact
> security@...0te.com 
> 
> Details
> http://www.rem0te.com/public/images/sophos.pdf
> 
> 
> 
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