Advisory Details

May 29th, 2013

(Pwn2Own) Mozilla Firefox nsHTMLEditRules Use-After-Free Remote Code Execution Vulnerability

ZDI-13-090
ZDI-CAN-1825

CVE ID CVE-2013-0787
CVSS SCORE 7.5, (AV:N/AC:L/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS Mozilla
AFFECTED PRODUCTS Firefox
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 12852. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Mozilla Firefox. 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 handling of nsHTMLEditRules objects. By manipulating a document's elements an attacker can force a dangling pointer to be reused after it has been freed. An attacker can leverage this vulnerability to execute code under the context of the current process.

ADDITIONAL DETAILS Mozilla has issued an update to correct this vulnerability. More details can be found at:
https://bugzilla.mozilla.org/show_bug.cgi?id=848644
DISCLOSURE TIMELINE
  • 2013-04-26 - Vulnerability reported to vendor
  • 2013-05-29 - Coordinated public release of advisory
CREDIT VUPEN Security [ http://www.vupen.com ]
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