[IDSoftware claims this isn't a backdoor, yet it can only be exploited
with a packet coming from THEIR subnet. This allows an ID person to
have complete access and control over your quake server.]
Forwarded From: RSI Advise (advise@repsec.com)
RSI.0001.05-01-98.ALL.QUAKE_SERVER
|:::. |::::: |::::. |::::: |::::: |::::.
.. :: .. .. :: .. .. .. ::
|:::: |:::: |:::: :::::: |::::: |:::: |:
|: :: |: |: |:: |: |: ::
|: :: |::::: |: |::::: |::::: |:::::
Repent Security Incorporated, RSI
[ http://www.repsec.com ]
*** RSI ALERT ADVISORY ***
--- [CREDIT] --------------------------------------------------------------
Vulnerability found by: Mark Zielinski (markz@repsec.com)
Advisory Author: Mark Zielinski
--- [SUMMARY] -------------------------------------------------------------
Announced: May 1st, 1998
Report code: RSI.0001.05-01-98.ALL.QUAKE_SERVER
Report title: Vulnerability in the Quake server
Vulnerability: RCON (Remote Console)
Patch status: None currently available
Platforms: Quake 1/2, QuakeWorld, Linux/Solaris Quake2
Reference: http://www.repsec.com/advisories.html
Impact: If exploited, an attacker could remotely compromise
administrator access on any Quake server.
--- [DETAILS] -------------------------------------------------------------
Problem: The Quake server has a feature where it allows
administrators to remotely send commands to the Quake
console with a password. However, it is possible to
remotely bypass authentication.
In order for this to be exploited, the attacker would
have to create a handcrafted udp packet with a header
containing the rcon command and the password "tms" with
a source IP coming from ID Software's Subnet. (192.246.40)
The Quake server does not require an open connection for
sending the rcon packet. When this is exploited, no logs
are reported of the rcon command being used.
This vulnerability is present in Quake 1, QuakeWorld,
Quake 2, Quake 2 Linux and Quake 2 Solaris, all versions.
--- [FIX] -----------------------------------------------------------------
Solution: Filter all incoming packets from the subnet 192.246.40.
--- [PATCH] ---------------------------------------------------------------
Solution: No patches are currently available.
---------------------------------------------------------------------------
Repent Security Incorporated (RSI)
advise@repsec.com
13610 N. Scottsdale Rd.
Suite #10-326
Scottsdale, AZ 85254
[ http://www.repsec.com ]
---------------------------------------------------------------------------
-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: 2.6.2
mQCNAzU6dqAAAAEEAOHt9a5vevjD8ZjsEmncEbFp2U7aeqvPTcF/8FJMilgOVp75
dshXvZixHsYU7flgCNzA7wLIQPWBQBrweLG6dx9gE9e5Ca6yAJxZg8wNsi06tZfP
nvmvf6F/7xoWS5Ei4k3YKuzscxlyePNNKws6uUe2ZmwVoB+i3HHT44dOafMhAAUT
tBpSZXBTZWMgPGFkdmlzZUByZXBzZWMuY29tPg==
=ro8H
-----END PGP PUBLIC KEY BLOCK-----
Copyright April 1998 RepSec, Inc.
The information in this document is provided as a service to customers
of RepSec, Inc. Neither RepSec, Inc., nor any of it's employees, makes
any warranty, express or implied, or assumes any legal liability or
responsibility for the accuracy, completeness, or usefulness of any
information, apparatus, product, or process contained herein, or
represents that its use would not infringe any privately owned rights.
Reference herein to any specific commercial products, process, or
services by trade name, trademark, manufacturer, or otherwise, does not
necessarily constitute or imply its endorsement, recommendation or
favoring by RepSec, Inc. The views and opinions of authors expressed
herein do not necessarily state or reflect those of RepSec, Inc., and may
not be used for advertising or product endorsement purposes.
The material in this alert advisory may be reproduced and distributed,
without permission, in whole or in part, by other security incident
response teams (both commercial and non-commercial), provided the above
copyright is kept intact and due credit is given to RepSec, Inc.
This alert advisory may be reproduced and distributed, without
permission, in its entirety only, by any person provided such
reproduction and/or distribution is performed for non-commercial
purposes and with the intent of increasing the awareness of the Internet
community.
---------------------------------------------------------------------------
RepSec, Inc. are trademarks of RepSec, Inc. All other trademarks are
property of their respective holders.
