TITLE:
Genecys Buffer Overflow and Denial of Service

SECUNIA ADVISORY ID:
SA20099

VERIFY ADVISORY:
http://secunia.com/advisories/20099/

CRITICAL:
Highly critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
Genecys 0.x
http://secunia.com/product/9944/

DESCRIPTION:
Luigi Auriemma has reported two vulnerabilities in Genecys, 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 "tell_player_surr_changes()"
function due to the unsafe use of the "sprintf()" and "strcat()
functions". This can potentially be exploited to cause a stack-based
buffer overflow and may allow arbitrary code execution.

2) A NULL pointer dereferencing error in the "parse_command()"
function can be exploited to crash the server via a specially-crafted
command sent from a client that does not contain the ":" character.

The vulnerabilities have been reported in version 0.2 and in the
current CVS version. Other versions may also be affected.

SOLUTION:
Host games on trusted networks only.

PROVIDED AND/OR DISCOVERED BY:
Luigi Auriemma

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

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