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     áòèé÷ :: Security-alerts
Security-Alerts mailing list archive (security-alerts@yandex-team.ru)

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[security-alerts] FW: [SA20637] Microsoft Windows RPC Mutual Authentication Vulnerability



> 
> TITLE:
> Microsoft Windows RPC Mutual Authentication Vulnerability
> 
> SECUNIA ADVISORY ID:
> SA20637
> 
> VERIFY ADVISORY:
> http://secunia.com/advisories/20637/
> 
> CRITICAL:
> Moderately critical
> 
> IMPACT:
> Spoofing
> 
> WHERE:
> From local network
> 
> OPERATING SYSTEM:
> Microsoft Windows 2000 Advanced Server
> http://secunia.com/product/21/
> Microsoft Windows 2000 Datacenter Server
> http://secunia.com/product/1177/
> Microsoft Windows 2000 Professional
> http://secunia.com/product/1/
> Microsoft Windows 2000 Server
> http://secunia.com/product/20/
> 
> DESCRIPTION:
> A vulnerability has been reported in Microsoft Windows, which can be
> exploited by malicious people to spoof a valid RPC server.
> 
> The vulnerability is caused due to an error within the handling of
> RPC mutual authentication. This can be exploited to cause custom RPC
> clients to incorrectly validate the identity of the RPC server, which
> potentially allows a malicious RPC server to impersonate a valid
> service.
> 
> Successful exploitation requires that RPC clients use SSL with mutual
> authentication option enabled and that a user e.g. is tricked into
> connecting to a malicious RPC server.
> 
> SOLUTION:
> Apply patch.
> 
> Microsoft Windows 2000 SP4:
> http://www.microsoft.com/downloads/details.aspx?FamilyId=5089d
> 956-7d8d-4241-9ca2-107ce4f8c093
> 
> PROVIDED AND/OR DISCOVERED BY:
> The vendor credits Michael Colson of Symantec.
> 
> ORIGINAL ADVISORY:
> MS06-031 (KB917736):
> http://www.microsoft.com/technet/security/Bulletin/MS06-031.mspx
> 




 




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