Mozilla Firefox Tag Order Vulnerability

Mozilla Firefox Tag Order Vulnerability

Announced

April 13, 2006

Reporter

TippingPoint and the Zero Day Initiative

Impact

Critical

Products

Firefox, Mozilla Suite, SeaMonkey, Thunderbird

Fixed in

• Firefox 1.0.8
• Firefox 1.5
• Mozilla Suite 1.7.13
• SeaMonkey 1
• Thunderbird 1.0.8
• Thunderbird 1.5

Description

A particular sequence of HTML tags that reliably crash Mozilla clients was reported by an anonymous researcher via TippingPoint and the Zero Day Initiative. The crash is due to memory corruption that can be exploited to run arbitary code.

Mozilla mail clients will crash on the tag sequence, but without the ability to run scripts to fill memory with the attack code it may not be possible for an attacker to exploit this crash.

Workaround

Upgrade to a fixed version.

References

• ZDI-06-009
• https://bugzilla.mozilla.org/show_bug.cgi?id=320182
• https://bugzilla.mozilla.org/show_bug.cgi?id=269095
  CVE-2006-0749