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ZDI-12-055 : Webkit.org Webkit copyNonAttributeProperties Remote Code
Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-12-055

April  9, 2012

- -- CVE ID:
CVE-2011-3928

- -- CVSS:
7.5, AV:N/AC:L/Au:N/C:P/I:P/A:P

- -- Affected Vendors:

WebKit.Org



- -- Affected Products:

WebKit.Org WebKit



- -- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of WebKit.
User interaction is required to exploit this vulnerability in that the
target must visit a malicious page or open a malicious file.

The flaw exists within the WebCore component as used by WebKit.
Specifically within the handling of element properties. When importing a
node having a nonattribute property such as an attached event, an object
is improperly freed and accessed. A remote attacker can exploit this
vulnerability to execute arbitrary code under the context of the browser.

- -- Vendor Response:

WebKit.Org has issued an update to correct this vulnerability. More
details can be found at:

http://prod.lists.apple.com/archives/security-announce/2012/Mar/msg00003.html




- -- Disclosure Timeline:
2011-12-22 - Vulnerability reported to vendor

2012-04-09 - Coordinated public release of advisory



- -- Credit:
This vulnerability was discovered by:

* wushi of team509



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