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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2008.0598 -- [Win] Vulnerabilities in Pragmatic General Multicast (PGM) Could Allow Denial of Service 11 June 2008 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Pragmatic Multicast Protocol (PGM) Publisher: Microsoft Operating System: Windows Impact: Denial of Service Access: Remote/Unauthenticated CVE Names: CVE-2008-1440 CVE-2008-1441 - --------------------------BEGIN INCLUDED TEXT-------------------- OVERVIEW: Microsoft has released patches for 2 vulnerabilities in the Pragmatic General Multicast (PRM) protocol. PGM Invalid Length Vulnerability - CVE-2008-1440: A denial of service vulnerability exists in implementations of the Pragmatic General Multicast (PGM) protocol on Microsoft Windows XP and Windows Server 2003. The vulnerability is due to improper validation of specially crafted PGM packets. PGM Malformed Fragment Vulnerability - CVE-2008-1441 A denial of service vulnerability exists in implementations of the Pragmatic General Multicast (PGM) protocol on Microsoft Windows XP, Windows Server 2003, Windows Vista, and Windows Server 2008. IMPACT: For the PGM Invalid Length Vulnerability: An attacker who successfully exploited this vulnerability could cause the computer to become non-responsive and require a restart to restore functionality. For the PGM Malformed Fragment Vulnerability: The protocols parsing code does not properly validate specially crafted PGM fragments and will cause the affected system to become non-responsive until the attack has ceased. MITIGATION: Install the patches available from Microsoft. REFERENCES: [1] Vulnerabilities in Pragmatic General Multicast (PGM) Could Allow Denial of Service http://www.microsoft.com/technet/security/bulletin/ms08-036.mspx - --------------------------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 iQCVAwUBSE8+lSh9+71yA2DNAQIVxwP9Hc879ascxLO7b76JebQLWWC7jjKT6Voc QMBZDf0EbPTgEo9kxTNgc5+YU57eNVEVa8IL9VnNYkmY8iNbWDSwWL/+2+CvnqJb SmGekc4MC2/vAgtapSWoCGwEQmxNdzrUOjR2ydQ6AwFJ5b2mh8zDnsUe6KM+l6OZ UE+4VexSq+U= =m76l -----END PGP SIGNATURE-----