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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-1999.183 -- Microsoft Security Bulletin (MS99-053) Patch Available for Windows "Multithreaded SSL ISAPI Filter" Vulnerability 03 December 1999 =========================================================================== Microsoft Corporation has released the following security bulletin concerning a vulnerability in the SSL ISAPI Filter. This vulnerability affects the SSL ISAPI Filter shipped with Microsoft(r) Internet Information Server and used by other Microsoft products. Under certain circumstances a race condition exists in multithreaded applications which may allow a transmitting thread to send decrypted, received data over the network. This problem may only occur in error, usually under high volumes of traffic on the server. It cannot be made to occur by any user. This vulnerability may allow a malicious user to eavesdrop on another user's plain text confidential data. A patch has been provided by Microsoft to eliminate this vulnerability: http://www.microsoft.com/Security/Bulletins/MS99-053.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 iQCVAwUBOFpaCCh9+71yA2DNAQE4HgP9GIuDmw59bmIFLn9ScTpfB2zOO8D2j3TP Xi/cfikLDHEfobIUSRf0+LTigKPiVW8tGPT/rPqvObK7eELux1fN14WGYkJ3zfxd 0wGD/vyiZO4RqmgxXf4QNiNH4Vb0QBzyD5qI6h+Ig1c8X0Cz15Ax0ftSCKI1J87H T7BYLvkCXJc= =7F61 -----END PGP SIGNATURE-----