Multiple Mozilla products mImageBufferSize information disclosure

mozilla-mimagebuffersize-info-disclosure (72856) The risk level is classified as LowLow Risk

Description:

Multiple Mozilla products including Firefox, Thunderbird, and SeaMonkey could allow a remote attacker to obtain sensitive information, caused by an error when encoding icon images related to mImageBufferSize in the encoder being initialized with a value different than the size of a source image. By viewing a specially-crafted image, a remote attacker could exploit this vulnerability to obtain information in uninitialized memory during an ICO to PNG image conversion.

*CVSS:

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

Consequences:

Obtain Information

Remedy:

Refer to MFSA 2012-06 for patch, upgrade or suggested workaround information. See References.

References:

  • MFSA 2012-06: Uninitialized memory appended when encoding icon images may cause information disclosure.
  • BID-51757: Mozilla Firefox/Thunderbird/SeaMonkey CVE-2012-0447 Information Disclosure Vulnerability
  • CVE-2012-0447: Mozilla Firefox 4.x through 9.0, Thunderbird 5.0 through 9.0, and SeaMonkey before 2.7 do not properly initialize data for image/vnd.microsoft.icon images, which allows remote attackers to obtain potentially sensitive information by reading a PNG image that was created through conversion from an ICO image.
  • OSVDB ID: 78738: Mozilla Multiple Products mImageBufferSize() Method image/vnd.microsoft.icon Image Encoding Information Disclosure

Platforms Affected:

  • Mozilla Firefox 9.0
  • Mozilla Seamonkey 2.6
  • Mozilla Thunderbird 9.0

Reported:

Jan 31, 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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