ZDI-10-029: Apple WebKit innerHTML element Substitution Remote Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-10-029
March 15, 2010

-- CVE ID:
CVE-2010-0050

-- Affected Vendors:
Google
Apple

-- Affected Products:
Google Chrome
Apple WebKit
Apple Safari

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TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 9590. 
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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.

The specific flaw exists in the WebCore's
HTMLObjectElement::renderFallBackContent() method. By rewriting an HTML
element via the document's innerHTML() method a memory corruption occurs
resulting from a call-after-free. This can be leveraged to execute
arbitrary code under the context of the current user.

-- Vendor Response:
Apple has issued an update to correct this vulnerability. More
details can be found at:

http://support.apple.com/kb/HT4070

-- Disclosure Timeline:
2009-10-21 - Vulnerability reported to vendor
2010-03-15 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * wushi of team509

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