MS11-094 - Vulnerabilities in Microsoft PowerPoint Could Allow Remote Code Execution

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Details
Vulnerability name/brief description MS11-094 - Vulnerabilities in Microsoft PowerPoint Could Allow Remote Code Execution
CVE/CAN name
Vendor threat level Important
SophosLabs threat level Medium
Solution MS11-094
Vendor description This security update resolves two privately reported vulnerabilities in Microsoft Office. The vulnerabilities could allow remote code execution if a user opens a specially crafted PowerPoint file. An attacker who successfully exploited either of the vulnerabilities could take complete control of an affected system. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.
SophosLabs comments To mitigate these vulnerabilities, the user may do the following: Disable the WebClient service Block TCP ports 139 and 445 at the external firewall Use Microsoft Office File Block policy to block the opening of Office documents from untrusted locations Use the Microsoft Office Isolated Conversion Environment to opening files from untrusted sources
SophosLabs testing result No SophosLabs testing result found
Currently known exploits No currently known exploits found
First sample seen No samples found
Discovery date 13 Dec 2011
Affected software Microsoft PowerPoint 2007 Service Pack 2
Microsoft PowerPoint 2010 (32-bit editions)
Microsoft PowerPoint 2010 (64-bit editions)
Microsoft Office 2008 for Mac
Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats Service Pack 2
Microsoft PowerPoint Viewer 2007 Service Pack 2
References
Credits
  • MAPP
Revisions
  • December 13, 2011 - Initial analysis written

Explanation of terms

Vulnerability Name/Brief Description:

Vendor identifier plus a brief description of the type of attack.

CVE/CAN Name:

Currently assigned CVE name. If a CVE name doesn't exist the CAN name will be used until a CVE has been assigned.

Vendor Threat Level:

Threat level assigned by the vendor

SophosLabs Threat Level:

Threat level assigned by SophosLabs

  • LOW RISK - There is little chance of this vulnerability being actively exploited by malware.
  • MEDIUM RISK - There is a possibility of this vulnerability being actively exploited by malware.
  • HIGH RISK - There is a strong possibility of this vulnerability being actively exploited by malware.
  • CRITICAL RISK - This vulnerability will almost certainly be actively exploited by malware.

Solution:

Vendor-supplied Patch identifier and recommended solution, or workaround if applicable.

Vendor Description:

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SophosLabs Comments:

SophosLabs' opinions and observations of the vulnerability in question.

SophosLabs Testing Result:

Details of completed lab testing, if applicable. Please note that the lab test environment may differ significantly from user environments.

Currently Known Exploits:

List of identities for known exploits, if applicable.

First Sample Seen:

Date of the first sample seen by SophosLabs.

Discovery Date:

Date of the earliest known publically disclosed advisory.

Affected Software:

Vulnerable platforms and software versions.