CVE-2012-1962

Impact:
Critical
Public Date:
2012-07-17
Bugzilla:
840215: CVE-2012-1962 Mozilla: JSDependentString::undepend string conversion results in memory corruption (MFSA 2012-52)

The MITRE CVE dictionary describes this issue as:

Use-after-free vulnerability in the JSDependentString::undepend function in Mozilla Firefox 4.x through 13.0, Firefox ESR 10.x before 10.0.6, Thunderbird 5.0 through 13.0, Thunderbird ESR 10.x before 10.0.6, and SeaMonkey before 2.11 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via vectors involving strings with multiple dependencies.

Find out more about CVE-2012-1962 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 version 6 (firefox) RHSA-2012:1088 2012-07-17
Red Hat Enterprise Linux version 6 (thunderbird) RHSA-2012:1089 2012-07-17
Red Hat Enterprise Linux version 5 (firefox) RHSA-2012:1088 2012-07-17
Red Hat Enterprise Linux Optional Productivity Applications version 5 (thunderbird) RHSA-2012:1089 2012-07-17
Red Hat Enterprise Linux Desktop version 5 (thunderbird) RHSA-2012:1089 2012-07-17

Affected Packages State

Platform Package State
Red Hat Enterprise Linux version 6 xulrunner 10.0.6-1.el6_3 Fixed
Red Hat Enterprise Linux version 5 xulrunner 10.0.6-2.el5_8 Fixed

Acknowledgements

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Security researcher Bill Keese as the original reporter of this issue.