ZDI-08-045: Apple Safari StyleSheet ownerNode Heap Corruption Vulnerability
ZDI-08-045: Apple Safari StyleSheet ownerNode Heap Corruption
Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-08-045
July 25, 2008
-- CVE ID:
CVE-2008-2317
-- Affected Vendors:
Apple
-- Affected Products:
Apple Safari
-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 6146.
For further product information on the TippingPoint IPS, visit:
http://www.tippingpoint.com
-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Apple Safari. User interaction is required
to exploit this vulnerability in that the target must visit a malicious
page.
The specific flaw exists in the garbage collection of JavaScript
document elements in WebCore. When a CSSStyleSheet object of a style
element is copied, and the style element is deallocated, a reference to
the ownerNode property of the copied CSSStyleSheet object will result in
a heap corruption allowing for the execution of arbitrary code.
-- Vendor Response:
Apple has issued an update to correct this vulnerability. More
details can be found at:
http://support.apple.com/kb/HT2351
-- Disclosure Timeline:
2008-05-13 - Vulnerability reported to vendor
2008-07-25 - Coordinated public release of advisory
-- Credit:
This vulnerability was discovered by:
* Anonymous
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