GraphicsMagick PNG denial of service

graphicsmagick-png-dos (77259) The risk level is classified as MediumMedium Risk

Description:

GraphicsMagick is vulnerable to a denial of service, caused by a casting error when parsing PNG images. By persuading a victim to open a specially-crafted PNG image, a remote attacker could exploit this vulnerability to cause the application to crash.

*CVSS:

Base Score: 4.3
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Partial
 
Temporal Score: 3.2
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

Remedy:

Apply the patch for this vulnerability, available from the GraphicsMagick Mercurial Repository. See References.

References:

  • GraphicsMagick Mercurial Repository: coders/png.c: Some typecasts were inconsistent with libpng-1.4 and later..
  • GraphicsMagick Web site: GraphicsMagick News.
  • Red Hat Bugzilla ¿ Bug 844105 : CVE-2012-3438 GraphicsMagick: png_IM_malloc() size argument.
  • BID-54716: GraphicsMagick 'png_IM_malloc()' Function Denial of Service Vulnerability
  • CVE-2012-3438: The Magick_png_malloc function in coders/png.c in GraphicsMagick 6.7.8-6 does not use the proper variable type for the allocation size, which might allow remote attackers to cause a denial of service (crash) via a crafted PNG file that triggers incorrect memory allocation.
  • OSVDB ID: 84323: GraphicsMagick PNG Image Handling Casting Error DoS
  • SA50090: GraphicsMagick PNG Image Parsing Denial of Service Vulnerability

Platforms Affected:

  • GraphicsMagick GraphicsMagick 1.3.16

Reported:

Jul 30, 2012

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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