MS13-041 - Vulnerability in Lync Could Allow Remote Code Execution (2834695)

Click any highlighted term for further explanation. For more information, contact technical support.

 

Details
Vulnerability name/brief description MS13-041 - Vulnerability in Lync Could Allow Remote Code Execution (2834695)
CVE/CAN name No CVE/CAN name found
Vendor threat level Important
SophosLabs threat level Medium
Solution MS13-041
Vendor description This security update resolves a privately reported vulnerability in Microsoft Office. The vulnerability could allow remote code execution if an attacker shares specially crafted content, such as a file or program, as a presentation in Lync or Communicator and then convinces a user to accept an invitation to view or share the presentable content. In all cases, an attacker would have no way to force users to view or share the attacker-controlled file or program. Instead, an attacker would have to convince users to take action, typically by getting them to accept an invitation in Lync or Communicator to view or share the presentable content.
SophosLabs comments As this vulnerability was privately disclosed, and it also would require users to accept a Lync or Communicator request, the chances of the vulnerability occurring has been largely mitigated. Nevertheless, Sophos rates this vulnerability as Medium as it is a remote code excecution threat.
SophosLabs testing result No SophosLabs testing result found
Currently known exploits No currently known exploits found
First sample seen No samples found
Discovery date 14 May 2013
Affected software Microsoft Communicator 2007 R2
Microsoft Lync 2010 (32-bit)
Microsoft Lync 2010 (64-bit)
Microsoft Lync 2010 Attendee (admin level install)
Microsoft Lync 2010 Attendee (user level install)
Microsoft Lync Web Access 2013
References
Credits
  • MAPP
Revisions
  • May 14, 2013 - 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:

Summary of the cause and potential effect of the vulnerability provided by the vendor.

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.