TITLE:
Alien Arena 2006 Gold Edition Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA19144

VERIFY ADVISORY:
http://secunia.com/advisories/19144/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
Alien Arena 2006 Gold Edition 5.x
http://secunia.com/product/8603/

DESCRIPTION:
Luigi Auriemma has reported some vulnerabilities in Alien Arena 2006
Gold Edition, which can be exploited by malicious users to cause a
DoS (Denial of Service) and potentially compromise a vulnerable
system.

1) A format string error within the "safe_cprintf()" function in
"games/acesrc/acebot_cmds.c" can potentially be exploited to execute
arbitrary code by causing the server to send certain
specially-crafted message to the client.

2) A boundary error within the "Cmd_Say_f()" function in
"source/game/g_cmds.c" can be exploited to cause a stack-based buffer
overflow via an overly long message sent from the client.

3) The "Com_sprintf()" function in "source/game/q_shared.c" did not
terminate the buffer with a NULL byte after calling "strncpy()". This
can potentially cause out-of-bounds memory access on certain platforms
and can be exploited to crash other clients by using a player with a
long skin, weapon, or model name.

Successful exploitation requires that the attacker is able to join
the game server.

The vulnerabilities have been reported in version 5.0 and prior.

SOLUTION:
The vendor will reported release a fixed version.

Allow only trusted users to join a game server and do not connect to
non-trusted game servers.

PROVIDED AND/OR DISCOVERED BY:
Luigi Auriemma

ORIGINAL ADVISORY:
http://aluigi.altervista.org/adv/aa2k6x-adv.txt

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