Microsoft Internet Explorer CSS Handling Code Execution Vulnerability (0day)

Title : Microsoft Internet Explorer CSS Handling Code Execution Vulnerability (0day)
VUPEN ID : VUPEN/ADV-2009-3301
CVE ID : GENERIC-MAP-NOMATCH
CWE ID : VUPEN VNS Only
CVSS V2 : VUPEN VNS Only
Rated as : Critical
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2009-11-21




A vulnerability has been identified in Microsoft Internet Explorer, which could be exploited by attackers to compromise a vulnerable system. This issue is caused by a dangling pointer in the Microsoft HTML Viewer (mshtml.dll) when retrieving certain CSS/STYLE objects via the "getElementsByTagName()" method, which could allow attackers to crash an affected browser or execute arbitrary code by tricking a user into visiting a malicious web page.

VUPEN has confirmed the vulnerability on fully patched Windows XP SP3 systems with Internet Explorer 7 and 6.

Affected Products

Microsoft Internet Explorer 7
Microsoft Internet Explorer 6

Solution

Disable Active Scripting in the Internet and Local intranet security zones.

VUPEN Security is not aware of any vendor-supplied patch.

References

http://www.vupen.com/english/advisories/2009/3301