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Outpost24 Public Security Note: Linux/Elxbot
From: David Jacoby <security () outpost24 com>
Date: Mon, 05 Dec 2005 21:23:23 +0100
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Public Security Note |__| http://www.outpost24.com
Mambo is a dynamic portal engine and content management system.
The software is written in PHP. A computer researcher which goes
under the alias rgod released an exploit for the "register_globals"
Emulation Layer Overwrite vulnerability and just a few days after
the vulnerability was released increased attacks for this vulnerability
was monitored, the increased traffic is due to a worm which is
currently in the wild.
Linux/Elxbot is a backdoor for the Mambo vulnerability. It will search
on Google for vulnerable targets. Once it infects a computer it will
connect to a predetermined IRC server where the attackers will wait and
have the possibility to gain access to the infected computer. The attackers
may also perform various tasks such as:
* Execute arbitrary commands
* TCP flood
* HTTP flood
* UDP flood
* Search Google for more vulnerable targets
On certain systems it will also download a perl script which will
allow the attacker to create a backchannel and spawn a shell on
the infected computer with the same privileges as the running webserver.
A detailed profile is available for Outpost24 members, for more information
please visit our webpage at http://www.outpost24.com
Download the latest version from the official Mambo homepage or
download the specific patch for this vulnerability.
Backdoor was analyzed by David Jacoby at Outpost24 Security
- Outpost24 Public Security Note: Linux/Elxbot David Jacoby (Dec 05)