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libpng png_decompress_chunk Integer Overflow - ver 2 (CVE-2011-3026)

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Check Point Reference: CPAI-2014-1632
Date Published:
Severity:
Last Updated:
Industry Reference(s): CVE-2011-3026
Protection Provided by: Security Gateway
  • R77
  • R76
  • R75
Vulnerability Description
An integer overflow vulnerability has been reported in libpng, an open source implementation of the PNG specification. The vulnerability is due to a heap allocation in the function png_decompress_chunk(). Remote attackers could exploit this vulnerability by sending a specially crafted PNG file to the vulnerable service. Successful exploitation would allow an attacker to execute arbitrary code in the security context of the affected service.

Protection Overview
This protection will detect and block specially crafted PNG files.

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, Protection tab and select the version of your choice.

To configure the defense, select your product from the list below and follow the related protection steps.

Security Gateway R77 / R76 / R75 / R71 / R70

How Can I Protect My Network?

  1. In the IPS tab, click Protections and find the libpng png_decompress_chunk Integer Overflow - ver 2 protection using the Search tool and Edit the protection's settings.
  2. Install policy on all modules.

How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:

Attack Name:  Content Protection Violation.
Attack Information:  libpng png_decompress_chunk Integer Overflow - ver 2