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CVE-2012-1956

Impact:
Moderate
Public Date:
2012-08-28
Bugzilla:
851912: CVE-2012-1956 Mozilla: Location object can be shadowed using Object.defineProperty (MFSA 2012-59)

The MITRE CVE dictionary describes this issue as:

Mozilla Firefox before 15.0, Thunderbird before 15.0, and SeaMonkey before 2.12 do not prevent use of the Object.defineProperty method to shadow the location object (aka window.location), which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via vectors involving a plugin.

Find out more about CVE-2012-1956 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 4.3
Base Metrics AV:N/AC:M/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None

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 (thunderbird) RHSA-2012:1351 2012-10-09
Red Hat Enterprise Linux 5 (firefox) RHSA-2012:1350 2012-10-09
Red Hat Enterprise Linux 6 (firefox) RHSA-2012:1350 2012-10-09
Red Hat Enterprise Linux 6 (thunderbird) RHSA-2012:1351 2012-10-09
Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) (thunderbird) RHSA-2012:1351 2012-10-09

Affected Packages State

Platform Package State
Red Hat Enterprise Linux version 5 xulrunner 10.0.8-1.el5_8 Fixed
Red Hat Enterprise Linux version 6 xulrunner 10.0.8-1.el6_3 Fixed

Acknowledgements

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

External References

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