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CVE-2012-3966

Impact:
Critical
Public Date:
2012-08-28
Bugzilla:
851918: CVE-2012-3966 Mozilla: Memory corruption with bitmap format images with negative height (MFSA 2012-61)

The MITRE CVE dictionary describes this issue as:

Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a negative height value in a BMP image within a .ICO file, related to (1) improper handling of the transparency bitmask by the nsICODecoder component and (2) improper processing of the alpha channel by the nsBMPDecoder component.

Find out more about CVE-2012-3966 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 6.8
Base Metrics AV:N/AC:M/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 5 (firefox) RHSA-2012:1210 2012-08-29
Red Hat Enterprise Linux 5 (thunderbird) RHSA-2012:1211 2012-08-29
Red Hat Enterprise Linux 6 (thunderbird) RHSA-2012:1211 2012-08-29
Red Hat Enterprise Linux 6 (firefox) RHSA-2012:1210 2012-08-29
Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) (thunderbird) RHSA-2012:1211 2012-08-29

Affected Packages State

Platform Package State
Red Hat Enterprise Linux version 5 xulrunner 10.0.7-2.el5_8 Fixed
Red Hat Enterprise Linux version 6 xulrunner 10.0.7-1.el6_3 Fixed

Acknowledgements

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Frédéric Hoguin as the original reporter of this flaw.

Last Modified