TITLE:
Centericq Empty Packet Denial of Service Weakness

SECUNIA ADVISORY ID:
SA17798

VERIFY ADVISORY:
http://secunia.com/advisories/17798/

CRITICAL:
Not critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
Centericq 4.x
http://secunia.com/product/5327/

DESCRIPTION:
Wernfried Haas has reported a vulnerability in Centericq, which
potentially can be exploited by malicious people to cause a DoS
(Denial of Service).

The weakness is caused due to an error in the packet handling for
peer to peer communications in the "DirectClient" class. This can be
exploited to crash a vulnerable client by sending an empty packet to
the listening port.

Successful exploitation requires that the setting "Enable
peer-to-peer communications" has been enabled.

SOLUTION:
Disable the "Enable peer-to-peer communications" setting. This may
however affect functionality.

PROVIDED AND/OR DISCOVERED BY:
Wernfried Haas

ORIGINAL ADVISORY:
http://www.debian.org/security/2005/dsa-912

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