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TITLE:
Toribash Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA26507

VERIFY ADVISORY:
http://secunia.com/advisories/26507/

CRITICAL:
Highly critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
Toribash 2.x
http://secunia.com/product/15371/

DESCRIPTION:
Luigi Auriemma has reported some vulnerabilities in Toribash, which
can be exploited by malicious people to cause a DoS (Denial of
Service) or potentially compromise a vulnerable system.

1) A format string error when processing the nicknames exists within
the dedicated server. This can be exploited to crash the server and
potentially execute arbitrary code by sending a specially crafted
nickname containing format specifiers to a vulnerable server.

2) A buffer overflow when reading overly long game commands (more
than 256 bytes) exists within the game client. This can be exploited
to cause a buffer overflow and may allow the execution of arbitrary
code by e.g. tricking a user into connecting to a malicious server or
playing a malicious replay (*.rpl) file.

3) A buffer overflow exists in the game client when handling "SAY"
commands without line feeds. This can be exploited to freeze or crash
the client and may allow the execution of arbitrary code by e.g.
tricking a user into connecting to a malicious server.

4) The server does not initialise data for clients until the "ENTER"
command is received. This can be exploited to crash the server by
joining a vulnerable server and issuing the "GRID" command before
entering the match using the "ENTER" command.

Note: It is also possible to slow down the game server and annoy the
game host by sending the bell character (0x07) to a server. It is
also reported that attackers can disconnect clients from a server by
entering a match and sending an overly long "SPEC" command or emote
to the server.
The vulnerabilities are reported in versions 2.71 and prior. Other
versions may also be affected.

SOLUTION:
Allow only trusted people access to your game server. Do not connect
to untrusted servers and do not use replays from untrusted sources.

PROVIDED AND/OR DISCOVERED BY:
Luigi Auriemma

ORIGINAL ADVISORY:
http://aluigi.altervista.org/adv/toribashish-adv.txt

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About:
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