Security Advisory

Microsoft Security Advisory 2757760

Published: September 17, 2012 | Updated: September 21, 2012

Version: 2.0

Microsoft has completed the investigation into public reports of this vulnerability. We have issued MS12-063 to address this issue. For more information about this issue, including download links for an available security update, please review MS12-063. The vulnerability addressed is the execCommand Use After Free Vulnerability - CVE-2012-4969.

To improve security protections for customers, Microsoft provides vulnerability information to major security software providers in advance of each monthly security update release. Security software providers can then use this vulnerability information to provide updated protections to customers via their security software or devices, such as antivirus, network-based intrusion detection systems, or host-based intrusion prevention systems. To determine whether active protections are available from security software providers, please visit the active protections websites provided by program partners, listed in Microsoft Active Protections Program (MAPP) Partners.

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The information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

• V1.0 (September 17, 2012): Advisory published.
• V1.1 (September 18, 2012): Assigned Common Vulnerability and Exposure number CVE-2012-4969 to the issue. Also corrected instructions in the EMET workaround.
• V1.2 (September 19, 2012): Added link to Microsoft Fix it solution, "Prevent Memory Corruption via ExecCommand in Internet Explorer," that prevents exploitation of this issue.
• V2.0 (September 21, 2012): Advisory updated to reflect publication of security bulletin.

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