Mozilla Foundation Security Advisory 2012-34

Miscellaneous memory safety hazards (rv:13.0/ rv:10.0.5)

Announced

June 5, 2012

Impact

Critical

Products

Firefox, Firefox ESR, SeaMonkey, Thunderbird, Thunderbird ESR

Fixed in

• Firefox 13
• Firefox ESR 10.0.5
• SeaMonkey 2.10
• Thunderbird 13
• Thunderbird ESR 10.0.5

Description

Mozilla developers identified and fixed several memory safety bugs in the browser engine used in Firefox and other Mozilla-based products. Some of these bugs showed evidence of memory corruption under certain circumstances, and we presume that with enough effort at least some of these could be exploited to run arbitrary code.

In general these flaws cannot be exploited through email in the Thunderbird and SeaMonkey products because scripting is disabled, but are potentially a risk in browser or browser-like contexts in those products.

References

Jesse Ruderman, Igor Bukanov, Bill McCloskey, Christian Holler, Andrew McCreight, and Brian Bondy reported memory safety problems and crashes that affect Firefox 12.

• Memory safety bugs fixed in Firefox 13
• CVE-2012-1938

Christian Holler reported a memory safety problem that affects Firefox ESR.

• Assertion failure: [infer failure] Missing type pushed 0: float, at jsinfer.cpp:348
• CVE-2012-1939

Igor Bukanov, Olli Pettay, Boris Zbarsky, and Jesse Ruderman reported memory safety problems and crashes that affect Firefox ESR and Firefox 12.

• Memory safety bugs fixed in Firefox 10.0.5 and Firefox 13
• CVE-2012-1937

Ken Russell of Google reported a bug in NVIDIA graphics drivers that they needed to work around in the Chromium WebGL implementation. Mozilla has done the same in Firefox 13 and ESR 10.0.5.

• Work around NVIDIA driver bug in glBufferData
• CVE-2012-3105