Mozilla Foundation Security Advisory 2016-39

Miscellaneous memory safety hazards (rv:46.0 / rv:45.1 / rv:38.8)

Announced

April 26, 2016

Reporter

Mozilla Developers

Impact

Critical

Products

Firefox, Firefox ESR, Thunderbird

Fixed in

• Firefox 46
• Firefox ESR 38.8
• Firefox ESR 45.1
• Thunderbird 38.8
• Thunderbird 45.1

Description

Mozilla developers 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.

References

Christian Holler, Tyson Smith, and Phil Ringalda reported memory safety problems and crashes that are fixed in Firefox ESR 45.1, Firefox ESR 38.8 and Firefox 46.

• Memory safety bugs fixed in Firefox ESR 45.1, Firefox ESR 38.8 and Firefox 46 (CVE-2016-2807)

Gary Kwong, Christian Holler, Jesse Ruderman, Mats Palmgren, Carsten Book, Boris Zbarsky, David Bolter, and Randell Jesup reported memory safety problems and crashes that are fixed in Firefox ESR 45.1 and Firefox 46.

• Memory safety bugs fixed in Firefox ESR 45.1 and Firefox 46 (CVE-2016-2806)

Gary Kwong, Christian Holler, Andrew McCreight, Boris Zbarsky, and Steve Fink reported memory safety problems and crashes that are fixed in Firefox 46.

• Memory safety bugs fixed in Firefox 46 (CVE-2016-2804)

Christian Holler reported a memory safety problem that is fixed in Firefox ESR 38.8.

• Memory safety bug fixed in Firefox ESR 38.8 (CVE-2016-2805)