Mozilla Foundation Security Advisory 2013-02

Use-after-free and buffer overflow issues found using Address Sanitizer

January 8, 2013
Abhishek Arya
Firefox, Firefox ESR, SeaMonkey, Thunderbird, Thunderbird ESR
Fixed in
  • Firefox 18
  • Firefox ESR 10.0.11
  • Firefox ESR 10.0.12
  • Firefox ESR 17.0.2
  • SeaMonkey 2.15
  • Thunderbird 17.0.2
  • Thunderbird ESR 10.0.12
  • Thunderbird ESR 17.0.2


Security researcher Abhishek Arya (Inferno) of the Google Chrome Security Team discovered a series critically rated of use-after-free, out of bounds read, and buffer overflow issues using the Address Sanitizer tool in shipped software. These issues are potentially exploitable, allowing for remote code execution. We would also like to thank Abhishek for reporting three additional user-after-free and out of bounds read flaws introduced during Firefox development that were fixed before general release.

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.


The following issue was fixed in Firefox 18:

The following issues were fixed in Firefox 18, ESR 17.0.1, and ESR 10.0.12:

The following issues were fixed in Firefox 18 and ESR 17.0.1:

The following issue was fixed in Firefox 18 and in the earlier ESR 10.0.11 release: