Webkit.org Webkit copyNonAttributeProperties Remote Code Execution Vulnerability

April 9th, 2012
ZDI-12-055 ZDI-CAN-1415

CVE ID

CVE-2011-3928

CVSS Score

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

Affected Vendors

WebKit.Org

Affected Products

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.

Additional Details

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

wushi of team509

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