MS13-061 - Vulnerabilities in Microsoft Exchange Server Could Allow Remote Code Execution (2876063)

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Details
Vulnerability name/brief description MS13-061 - Vulnerabilities in Microsoft Exchange Server Could Allow Remote Code Execution (2876063)
CVE/CAN name
Vendor threat level Critical
SophosLabs threat level High
Solution MS13-061
Vendor description This security update resolves three publicly disclosed vulnerabilities in Microsoft Exchange Server. The vulnerabilities exist in the WebReady Document Viewing and Data Loss Prevention features of Microsoft Exchange Server. The vulnerabilities could allow remote code execution in the security context of the transcoding service on the Exchange server if a user previews a specially crafted file using Outlook Web App (OWA). The transcoding service in Exchange that is used for WebReady Document Viewing uses the credentials of the LocalService account. The Data Loss Prevention feature hosts code that could allow remote code execution in the security context of the Filtering Management service if a specially crafted message is received by the Exchange server. The Filtering Management service in Exchange uses the credentials of the LocalService account. The LocalService account has minimum privileges on the local system and presents anonymous credentials on the network.
SophosLabs comments Microsoft Exchange Server is a widely deployed email server used by businesses and should be patched to protect against exploitation ASAP.
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 Aug 2013
Affected software Microsoft Exchange Server 2007 Service Pack 3 
Microsoft Exchange Server 2010 Service Pack 2 
Microsoft Exchange Server 2010 Service Pack 3 
Microsoft Exchange Server 2013 Cumulative Update 1 
Microsoft Exchange Server 2013 Cumulative Update 2 
References
Credits
  • MAPP
Revisions
  • August 13, 2013 - Initial Revision 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:

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Vendor Description:

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SophosLabs Comments:

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SophosLabs Testing Result:

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Currently Known Exploits:

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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.