The recently exploit that targetted the IIS FTP service on Windows 2000 has now been seen to crash windows 2003 servers even using the anonymous account – This means that the number of possible exploitable servers has increased dramatically.

The using the exploit, attackers can cause the ftp service to crash by connecting as an anonymous user – then sending specific ftp commands, the FTP service would then need to be manually restarted.

More information on the exploit can be found here

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