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Vulnerability Assessment & Network Security Forums |
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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. Home >> Browse Vulnerability Assessment Database >> FTP >> wu-ftpd S/KEY authentication overflow Vulnerability Assessment Details
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wu-ftpd S/KEY authentication overflow |
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Checks the banner of the remote wu-ftpd server Detailed Explanation for this Vulnerability Assessment The remote Wu-FTPd server seems to be vulnerable to a remote overflow. This version contains a remote overflow if s/key support is enabled. The skey_challenge function fails to perform bounds checking on the name variable resulting in a buffer overflow. With a specially crafted request, a possible hacker can execute arbitrary code resulting in a loss of integrity and/or availability. It appears that this vulnerability may be exploited prior to authentication. It is reported that S/Key support is not enabled by default, though some operating system distributions which ship Wu-Ftpd may have it enabled. *** Nessus solely relied on the banner of the remote server *** to issue this warning, so it may be a false positive. Solution : Upgrade to Wu-FTPd 2.6.3 when available or disable SKEY or apply the patches available at http://www.wu-ftpd.org Network Security Threat Level: High Networks Security ID: 8893 Vulnerability Assessment Copyright: This script is Copyright (C) 2004 David Maciejak |
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UPS, Power Protection, APC |
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