Check Point Advisories

Sophos Anti-Virus PDF Handling Stack Buffer Overflow

Vulnerability
Protection

Check Point Reference:	CPAI-2012-830
Date Published:	30 Dec 2012
Severity:	Critical
Last Updated:	Sunday 14 February, 2016
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	A stack buffer overflow vulnerability has been reported in Sophos Anti-Virus and Endpoint Protection. The vulnerability is due to an error when handling encrypted PDF files. A remote attacker can exploit this issue by sending a specially crafted PDF file to an affected user. The vulnerability is triggered when the Sophos Detection Engine scans the malformed PDF file. Successful exploitation could result in arbitrary code execution in the context of the affected service.

Protection Overview

This protection will detect and block the transferring of specially crafted PDF files to the target.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

In the IPS tab, click Protections and find the Sophos Anti-Virus PDF Handling Stack Buffer Overflow protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Security Products Enforcement Violation.
Attack Information: Sophos Anti-Virus PDF handling stack buffer overflow