ZDI-11-097: Apple Webkit setOuterText Memory Corruption Remote Code Execution Vulnerability
March 2, 2011
-- CVE ID: CVE-2011-0116
-- CVSS: 9, (AV:N/AC:L/Au:N/C:P/I:P/A:C)
-- Affected Vendors: Apple
-- Affected Products: Apple WebKit
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-- Vulnerability Details: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple Webkit. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the setOuterText method of the Webkit htmlelement library. Due to a failure to properly track DOM manipulations made within the browser, it is possible to make use of a previously freed pointer and facilitate remote code execution under the context of the user running the browser process.
-- Vendor Response: Apple has issued an update to correct this vulnerability. More details can be found at: http://support.apple.com/kb/HT4554
-- Disclosure Timeline: 2010-12-21 - Vulnerability reported to vendor 2011-03-02 - Coordinated public release of advisory
-- Credit: This vulnerability was discovered by: * Anonymous
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