Child nodes from nsDOMAttribute still accessible after removal of nodes

Child nodes from nsDOMAttribute still accessible after removal of nodes

Announced

January 31, 2012

Reporter

regenrecht

Impact

Critical

Products

Firefox, SeaMonkey, Thunderbird

Fixed in

• Firefox 10
• Firefox 3.6.26
• SeaMonkey 2.7
• Thunderbird 10
• Thunderbird 3.1.18

Description

Security researcher regenrecht reported via TippingPoint's Zero Day Initiative that removed child nodes of nsDOMAttribute can be accessed under certain circumstances because of a premature notification of AttributeChildRemoved. This use-after-free of the child nodes could possibly allow for remote code execution.

References

• AttributeChildRemoved Use-After-Free
• CVE-2011-3659