Microsoft Releases Patch for Internet Explorer Exploit

Systems Affected

     * Microsoft Internet Explorer 6

     * Microsoft Internet Explorer 7

     * Microsoft Internet Explorer 8

     * Microsoft Internet Explorer 9

Overview

   Microsoft has released Security Bulletin MS12-063 to address the

   use-after-free vulnerability that has been actively exploited this

   past week.

Description

   Microsoft Internet Explorer versions 6, 7, 8, and 9 are susceptible

   to a use-after-free vulnerability. This vulnerability is being

   actively exploited in the wild. Microsoft has released Security

   Bulletin MS12-063 to patch this vulnerability and four others.

   This vulnerability was previously mentioned in US-CERT Alert

   TA12-262A. Additional information is available in US-CERT

   Vulnerability Note VU#480095.

Impact

   A remote, unauthenticated attacker could execute arbitrary code,

   cause a denial of service, or gain unauthorized access to your

   files or system.

Solution

   US-CERT recommends that Internet Explorer users run Windows Update

   as soon as possible to apply the MS12-063 patch.

References

 * Microsoft Security Bulletin MS12-063

   <http://technet.microsoft.com/en-us/security/Bulletin/MS12-063>

 * US-CERT Alert: Microsoft Security Advisory for Internet Explorer

   Exploit

   <http://www.us-cert.gov/cas/techalerts/TA12-262A.html>

 * Microsoft Windows Update

   <http://go.microsoft.com/fwlink/?LinkID=40747>

 * US-CERT Vulnerability Note VU#480095

   <http://www.kb.cert.org/vuls/id/480095>

* Microsoft Security Advisory (2755801)

  - Title: Update for Vulnerabilities in Adobe Flash Player in

    Internet Explorer 10    

  - http://technet.microsoft.com/security/advisory/2755801

  - Revision Note: V1.0 (September 21, 2012): Advisory published. 

* Microsoft Security Advisory (2757760)

  - Title: Vulnerability in Internet Explorer Could Allow Remote

    Code Execution   

  - http://technet.microsoft.com/security/advisory/2757760

  - Revision Note: V2.0 (September 21, 2012): Advisory updated to

    reflect publication of security bulletin.