TITLE:
csDoom Format String and Buffer Overflow Vulnerabilities

SECUNIA ADVISORY ID:
SA19389

VERIFY ADVISORY:
http://secunia.com/advisories/19389/

CRITICAL:
Highly critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
csDoom 0.x
http://secunia.com/product/8926/

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

1) A boundary error exists in the "SV_BroadcastPrintf()" function
within the handling of chat messages that are sent from a client.
This can be exploited to cause a stack-based buffer overflow and may
allow arbitrary code execution.

2) A boundary error exists in the "SV_SetupUserInfo()" function
within the handling of user's nickname and teamname when a player
joins the server. This can be exploited to cause a buffer overflow,
which crashes the server.

3) A format string error exists in the "PrintString()" function when
displaying text strings in the console and in the game screen. This
can be exploited to crash the client or the server and may allow
arbitrary code execution.

The vulnerabilities have been reported in version 0.7 and prior.

SOLUTION:
The vulnerabilities have reportedly been fixed in the latest copy
that was released on 2006-03-25.

PROVIDED AND/OR DISCOVERED BY:
Luigi Auriemma

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

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