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Serv-U FTP Server < 4.2 SITE CHMOD Command Handling Overflow



The remote host is vulnerable to a buffer overflow.


The remote host is running Serv-U FTP server. There is a bug in the way this server handles arguments to the SITE CHMOD requests which may allow an attacker to trigger a buffer overflow against this server, which may allow him to disable this server remotely or to execute arbitrary code on this host.


Upgrade Serv-U FTP Server version 4.2 or later.