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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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TESO in.telnetd buffer overflow

Vulnerability Assessment Summary Attempts to overflow the Telnet server buffer Detailed Explanation for this Vulnerability Assessment The Telnet server does not return an expected number of replies when it receives a long sequence of 'Are You There' commands. This probably means it overflows one of its internal buffers and crashes. It is likely a possible hacker could abuse this bug to gain control over the remote host's superuser. For more information, see: http://www.team-teso.net/advisories/teso-advisory-011.tar.gz Solution: Comment out the 'telnet' line in /etc/inetd.conf. Network Security Threat Level: High Networks Security ID: 3064 Vulnerability Assessment Copyright: This script is Copyright (C) 2001 Pavel Kankovsky

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