Mozilla Foundation Security Advisory 2015-112

Vulnerabilities found through code inspection

September 22, 2015
Ronald Crane
Firefox, Firefox ESR, Firefox OS, SeaMonkey, Thunderbird
Fixed in
  • Firefox 41
  • Firefox ESR 38.3
  • Firefox OS 2.5
  • SeaMonkey 2.38
  • Thunderbird 38.3


Security researcher Ronald Crane reported eight vulnerabilities affecting released code that were found through code inspection. These included several potential memory safety issues resulting from the use of snprintf, one use of unowned memory, one use of a string without overflow checks, and five memory safety bugs. These do not all have clear mechanisms to be exploited through web content but are vulnerable if a mechanism can be found to trigger them.

In general this flaw cannot be exploited through email in the Thunderbird product because scripting is disabled, but is potentially a risk in browser or browser-like contexts.