Couple of Mozilla Firefox issues that need to be addressed...

Mozilla Firefox Remote Code Execution:
Mozilla Firefox contains a programming error that may allow a remote attacker to execute code on an affected system. A failed attempt will cause a Denial of Service against the application. The problem occurs in the Tracemonkey JavaScript engine.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 1, SID 15696.

Mozilla Firefox Stack Overflow:
Mozilla Firefox contains a programming error that may allow a remote attacker to execute code on an affected system. The problem occurs when Firefox fails to correctly handle Unicode data.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 1, SID 15699.

Details available here: http://www.snort.org/vrt/advisories/2009/07/15/vrt-rules-2009-07-15.html