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ESB-2007.0688 -- [Win] -- Vulnerability in MSN Messenger and Windows Live Messenger Could Allow Remote Code Execution
12 September 2007
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-----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 email@example.com 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: firstname.lastname@example.org 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-----
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