Advisory Details

April 9th, 2012

Webkit.org Webkit copyNonAttributeProperties Remote Code Execution Vulnerability

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.

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 wushi of team509
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