Mozilla Foundation Security Advisory 2015-01

Miscellaneous memory safety hazards (rv:35.0 / rv:31.4)

Announced

January 13, 2015

Reporter

Mozilla Developers

Impact

Critical

Products

Firefox, Firefox ESR, Firefox OS, SeaMonkey, Thunderbird

Fixed in

• Firefox 35
• Firefox ESR 31.4
• Firefox OS 2.2
• SeaMonkey 2.32
• Thunderbird 31.4

Description

Mozilla developers and community 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 product because scripting is disabled, but are potentially a risk in browser or browser-like contexts.

References

Christian Holler and Patrick McManus reported memory safety problems and crashes that affect Firefox ESR 31.3 and Firefox 34.

• Memory safety bugs fixed in Firefox ESR 31.4 and Firefox 35. (CVE-2014-8634)

Christoph Diehl, Christian Holler, Gary Kwong, Jesse Ruderman, Byron Campen, Terrence Cole, and Nils Ohlmeier reported memory safety problems and crashes that affect Firefox 34.

• Memory safety bugs fixed in Firefox 35. (CVE-2014-8635)