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Mozilla Foundation Security Advisory 2009-47

Title: Crashes with evidence of memory corruption (rv:1.9.1.3/ 1.9.0.14)
Impact: Critical
Announced: September 9, 2009
Reporter: Mozilla developers and community
Products: Firefox

Fixed in: Firefox 3.5.3
  Firefox 3.0.14

Description

Mozilla developers and community members identified and fixed several stability bugs in the browser engine used in Firefox and other Mozilla-based products. Some of these crashes 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.

Workaround

Disable JavaScript until a version containing these fixes can be installed.

References

Steve Roussey reported a crash in the Firefox 3.5 browser engine that was fixed in Firefox 3.5.3.

Jesse Ruderman reported crashes in the browser engine which were fixed in Firefox 3.5 and Firefox 3.0.14.

Daniel Holbert, Jesse Ruderman, Olli Pettay and toshi reported crashes in the browser engine which were fixed in Firefox 3.5.2 and Firefox 3.0.14.

Josh Soref, Jesse Ruderman, and Martijn Wargers reported crashes in the browser engine which were fixed in Firefox 3.5.3 and Firefox 3.0.14.

Carsten Book reported a crash in the Firefox 3.5 JavaScript engine that was fixed in Firefox 3.5.3.

Jesse Ruderman reported a crash in the JavaScript engine which was fixed in Firefox 3.5 and Firefox 3.0.14.

Carsten Book and Taral reported crashes in the JavaScript engine which were fixed in Firefox 3.5.2 and Firefox 3.0.14.