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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-1999.148 -- Microsoft Security Bulletin (MS99-38) Patch Available for "Spoofed Route Pointer" Vulnerability 21 September 1999 =========================================================================== Microsoft Corporation has released the following security bulletin concerning a vulnerability in the anti-source routing feature of Windows NT 4 service pack 5 and 9X operating systems. By manipulating information within the route pointer of a data packet, it is possible to bypass the anti-source routing feature. The patch described in the bulletin also allows single-homed machines to disable source routed packets: http://www.microsoft.com/Security/Bulletins/MS99-038.asp =========================================================================== This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document referenced above, AusCERT has had no control over its content. The decision to use any or all of this information is the responsibility of each user or organisation, and should be done so in accordance with site policies and procedures. If you have any questions or need further information, please contact Microsoft Corporation directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/Information/advisories.html If you believe that your system has been compromised, contact AusCERT or your representative in FIRST (Forum of Incident Response and Security Teams). Internet Email: email@example.com 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 emergencies. -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key iQCVAwUBOBBwxyh9+71yA2DNAQHnlQP/WHgZIvXOVyjH6PlRSPvLjVS/3SR8kU+X pDAV1OKN8nz71kq9Sbc3YBy+SENoaASyhxWIz4IJr49mCp5HwX6alAhEZ1ppS51O EvcvsDObiKRovHhUDxgkc4bRgLyk/L/AsrIUL7qVuKhA4tOQPlHwW7tEnd4Z2dwE LF5Kwon15UY= =n3cG -----END PGP SIGNATURE-----