AusCERT - ESB-2007.0688 -- [Win] -- Vulnerability in MSN Messenger and Windows Live Messenger Could Allow Remote Code Execution

HOME
About AusCERT
Membership
PKI Services
Training
Publications
Sec. Bulletins
Conferences
News & Media
Services
Web Log
Site Map
Site Help
Member login
ESB-2007.0688 -- [Win] -- Vulnerability in MSN Messenger and Windows Live Messenger Could Allow Remote Code Execution
Date: 12 September 2007
References: ESB-2007.0651

Click here for printable version
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                          ESB-2007.0688 -- [Win]
         Vulnerability in MSN Messenger and Windows Live Messenger
                     Could Allow Remote Code Execution
                             12 September 2007

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:              Windows Live Messenger 8.0
                      MSN Messenger 6.2, 7.0 and 7.5
Publisher:            Microsoft
Operating System:     Windows
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2007-2931

Ref:                  ESB-2007.0651

Original Bulletin:    
  http://www.microsoft.com/technet/security/Bulletin/MS07-054.mspx

Comment: This Microsoft update fixes the vulnerability previously
         reported in AusCERT ESB-2007.0651.
         
         Example exploit code for this vulnerability has been
         widely published.

- --------------------------BEGIN INCLUDED TEXT--------------------

MS07-054 - Vulnerability in MSN Messenger and Windows Live Messenger Could 
Allow Remote Code Execution (942099)

Affected Software:
   -MSN Messenger 6.2
   -MSN Messenger 7.0
   -MSN Messenger 7.5
   -Windows Live Messenger 8.0

Non-Affected Software:
   -MSN Messenger 7.0.0820
   -Windows Live Messenger 8.1

Full MS07-054 advisory:
   http://www.microsoft.com/technet/security/Bulletin/MS07-054.mspx


Vulnerability Details:
	
MSN Messenger Webcam or Video Chat Session Remote Code Execution 
Vulnerability - CVE-2007-2931

   A remote code execution vulnerability exists in MSN Messenger 6.2, MSN
   Messenger 7.0, MSN Messenger 7.5, and Windows Live Messenger 8.0. The
   vulnerability could allow remote code execution when a user chooses to
   accept a webcam or video chat invitation from an attacker. An attacker who
   successfully exploited this vulnerability could take complete control of
   the 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.

   This vulnerability requires that a user be signed on to the MSN Messenger
   or Windows Live Messenger service and accept a webcam or video chat
   invitation for any malicious action to occur. Therefore, any system where
   MSN Messenger 6.2, MSN Messenger 7.0, MSN Messenger 7.5, or Windows Live
   Messenger 8.0 is used, such as workstations or servers, is at risk from
   this vulnerability.

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        http://www.auscert.org.au/render.html?cid=1980

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================

-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967

iQCVAwUBRuc1CCh9+71yA2DNAQK4rwP/fzeGEXPN0uYxbvwLFzb0suuUuq9rPf1+
yx0PDKJN9kJA+YX2klnGXYTY+1Gkun27P8PBJE/t1oFJJQRFzn49u4+N6fRG0KgS
xaX4gTH7nbXWTU8XELhAlY/CnFVq1J8wD40/M23dJwhfTk8LQas2a7VgjV5Lufmb
EksHldgoBhM=
=JKUg
-----END PGP SIGNATURE-----