Microsoft Lync CVE-2012-1849 DLL Loading Arbitrary Code Execution Vulnerability

Bugtraq ID:	53831
Class:	Design Error
CVE:	CVE-2012-1849
Remote:	Yes
Local:	No
Published:	Jun 12 2012 12:00AM
Updated:	Jun 12 2012 12:00AM
Credit:	Hamburgers maccoy via Secunia SVCRP
Vulnerable:	Microsoft Office Communicator 2007 R2 Microsoft Lync 2010 Attendee 0 Microsoft Lync 2010 Attendant (64-bit) 0 Microsoft Lync 2010 Attendant (32-bit) 0 Microsoft Lync 2010 0
Not Vulnerable:

Microsoft Lync CVE-2012-1849 DLL Loading Arbitrary Code Execution Vulnerability

Attackers must trick a user into opening a file on a remote WebDAV or SMB share to exploit this issue.

A general exploit technique has been documented by TheLeader and H.D. Moore for the Metasploit Project; please see the references for more information.

Microsoft Lync CVE-2012-1849 DLL Loading Arbitrary Code Execution Vulnerability

Solution:
The vendor has released an advisory and updates. Please see the references for details.


Microsoft Office Communicator 2007 R2

• Microsoft Security Update for Microsoft Communicator 2007 R2 (KB2708980)
  http://www.microsoft.com/downloads/details.aspx?familyid=75eea324-689a -4892-bdd9-03ef399c4cba

Microsoft Lync 2010 0

• Microsoft Security Update for Microsoft Lync 2010 (64-bit) (KB2693282)
  http://www.microsoft.com/downloads/details.aspx?familyid=425406ea-28b9 -46f7-8c49-0c7ea46f16e3

Microsoft Lync 2010 Attendant (32-bit) 0

• Microsoft Security Update for Microsoft Lync 2010 Attendant (KB2702444)
  http://www.microsoft.com/downloads/details.aspx?familyid=fe7ad0f9-ee84 -4cda-b252-a8d31ead5053

Microsoft Lync 2010 Attendee 0

• Microsoft Security Update for Microsoft Lync 2010 Attendee (admin level install) (KB2696031)
  http://www.microsoft.com/downloads/details.aspx?familyid=c40f0d38-af90 -4966-a0f0-346fa48683d0


• Microsoft Security Update for Microsoft Lync 2010 Attendee (user level install) (KB2693283)
  http://www.microsoft.com/downloads/details.aspx?familyid=ad864c0e-5850 -44a3-b74f-5980a998a384

Microsoft Lync 2010 Attendant (64-bit) 0

• Microsoft Security Update for Microsoft Lync 2010 Attendant (KB2702444)
  http://www.microsoft.com/downloads/details.aspx?familyid=fe7ad0f9-ee84 -4cda-b252-a8d31ead5053

Microsoft Lync CVE-2012-1849 DLL Loading Arbitrary Code Execution Vulnerability

References:

• Application DLL Load Hijacking (HD Moore)
  
• Exploiting DLL Hijacking Flaws (hdm)
  
• Microsoft Homepage (Microsoft)
  
• More information about the DLL Preloading remote attack vector (Microsoft)
  
• Microsoft Security Advisory (2269637) (Microsoft)
  
• Microsoft Security Bulletin MS12-039 (Microsoft)