iPolicy Networks Security Advisory
 

Microsoft Internet Explorer Uninitialized Remote Code Execution Vulnerability

Date Discovered: 12/08/2009
Severity: High
Applications Affected: Microsoft Internet Explorer 7
Microsoft Internet Explorer 8
Type: Remote
Identifiers: CVE-2009-3673
Synopsis
Microsoft Internet Explorer is prone to remote code execution vulnerability. This vulnerability exists in the way that Internet Explorer accesses an object that has not been correctly initialized or has been deleted.
Recommended Actions
Update the patches as guided by vendor at :
http://www.microsoft.com/technet/security/bulletin/ms09-072.mspx
Threat Analysis
A remote code execution vulnerability exists in the way that Internet Explorer accesses an object that has not been correctly initialized or has been deleted.

When Internet Explorer attempts to access an object that has not been initialized or has been deleted, it may corrupt memory in such a way that an attacker could execute arbitrary code in the context of the logged-on user.

An attacker could exploit the vulnerability by constructing a specially crafted Web page. When a user views the Web page, the vulnerability could allow remote code execution.

An attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could then install programs, view, change, delete data, or create new accounts with full user rights.
References

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3673

Write-up by: Aditya Chaturvedi