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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 >> Gain root remotely >> Solaris 10 Telnet Authentication Bypass Vulnerability Assessment Details
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Solaris 10 Telnet Authentication Bypass |
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Attempts to log in as -fbin Detailed Explanation for this Vulnerability Assessment Summary : It is possible to log into the remote system using telnet without supplying any credentials Description : The remote version of telnet does not sanitize the user-supplied 'USER' environement variable. By supplying a specially malformed USER environment variable, a possible hacker may force the remote telnet server to believe that the user has already authenticated. For instance, the following command : telnet -l '-fbin' targethost Will result in obtaining a shell with the rights of the 'bin' user. Solution : Install patches 120068-02 (sparc) or 120069-02 (i386) which are available from Sun. Filter incoming to this port or disable the telnet service and use SSH instead, or use inetadm to mitigate this problem (see the link below). See also : http://lists.sans.org/pipermail/list/2007-February/025935.html http://isc.sans.org/diary.html?storyid=2220 Network Security Threat Level: Critical / CVSS Base Score : 10 (AV:R/AC:L/Au:NR/C:C/I:C/A:C/B:N) Networks Security ID: 22512 Vulnerability Assessment Copyright: This script is Copyright (C) 2007 Tenable Network Security, Inc. |
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Server Components, Memory |
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