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CVE Database

CVE-2012-3966

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

Details

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 and NIST NVD.

CVSS v2 metrics

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
RHEL Optional Productivity Applications version 5 (thunderbird) RHSA-2012:1211 August 29, 2012
Red Hat Enterprise Linux Desktop version 5 (thunderbird) RHSA-2012:1211 August 29, 2012
Red Hat Enterprise Linux version 5 (firefox) RHSA-2012:1210 August 29, 2012
Red Hat Enterprise Linux version 6 (firefox) RHSA-2012:1210 August 29, 2012
Red Hat Enterprise Linux version 6 (thunderbird) RHSA-2012:1211 August 29, 2012

External References

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.

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.