Mozilla Foundation Security Advisory 2009-64

Crashes with evidence of memory corruption (rv:1.9.1.4/ 1.9.0.15)

Announced

October 27, 2009

Reporter

Mozilla developers and community

Impact

Critical

Products

Firefox

Fixed in

• Firefox 3.0.15
• Firefox 3.5.4

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.

Vladimir Vukicevic, Jesse Ruderman, Martijn Wargers, Daniel Banchero, David Keeler, and Boris Zbarsky reported crashes in the browser engine which affected both Firefox 3 and Firefox 3.5.

• Browser engine crashes - Firefox 3, Firefox 3.5
• CVE-2009-3380

Thomas Frederiksen, Marcia Knous, Jesse Ruderman, Carsten Book, and Kevin Brosnan reported crashes in the browser engine which affected only Firefox 3.5.

• Browser engine crashes - Firefox 3.5
• CVE-2009-3381

Carsten Book reported a crash in the browser engine which affected only Firefox 3.

• https://bugzilla.mozilla.org/show_bug.cgi?id=514960
• CVE-2009-3382

David Anderson and Jeff Walden reported crashes in the JavaScript engine which affected only Firefox 3.5.

• JavaScript engine crashes - Firefox 3.5
• CVE-2009-3383