Mozilla Foundation Security Advisory 2013-65
Title: Buffer underflow when generating CRMF
Announced: August 6, 2013
Products: Firefox, Seamonkey
Fixed in: Firefox 23.0
Security researcher Nils used the Address Sanitizer to discover a use-after-free problem when generating a Certificate Request Message Format (CRMF) request with certain parameters. This causes a potentially exploitable crash.
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.