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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important.  If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.

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Ftp PASV on connect crashes the FTP server

Vulnerability Assessment Summary Issues a PASV command upon the connection Detailed Explanation for this Vulnerability Assessment The remote FTP server dies and dump core when it is issued a PASV command as soon as the client connects. The FTP server is very likely to write a world readable core file which contains portions of the passwd file. This permits local users to obtain the shadowed passwd file. Network Security Threat Level: High. Solution : Upgrade your FTP server to a newer version or disable it Networks Security ID: Vulnerability Assessment Copyright: This script is Copyright (C) 1999 Renaud Deraison

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