TITLE:
Empire Server "client_cmd()" Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA20094

VERIFY ADVISORY:
http://secunia.com/advisories/20094/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
Empire Server 4.x
http://secunia.com/product/9371/

DESCRIPTION:
Luigi Auriemma has reported a vulnerability in Empire Server, which
can be exploited by malicious people to cause a DoS (Denial of
Service).

The vulnerability is caused due to boundary error in the
"client_cmd()" function when adding text strings sent by a user to
the "player->client" buffer. This can be exploited to cause an
out-of-bounds memory access, which crashes the server.

The vulnerability has been reported in 4.3.2. Prior versions may also
be affected.

SOLUTION:
The vulnerability has been fixed in the CVS repositories.

PROVIDED AND/OR DISCOVERED BY:
Luigi Auriemma

ORIGINAL ADVISORY:
http://aluigi.altervista.org/adv/empiredos-adv.txt
http://empserver.cvs.sourceforge.net/empserver/empserver/src/lib/player/login.c?revision=1.38&view=markup

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