ShadowIRCd m_capab.c Denial of Service

This script is Copyright (C) 2013-2014 Tenable Network Security, Inc.


Synopsis :

The remote chat server is affected by a denial of service
vulnerability.

Description :

The remote host is running a version of ShadowIRCd that is affected by
a denial of service (DoS) vulnerability. An issue exists in the 'CAPAB'
module in 'm_capab.c' that causes servers to improperly handle
negotiation handshakes.

An unauthenticated, remote attacker could exploit this issue with a
specially crafted request, impacting the availability of the service.

See also :

http://rabbit.dereferenced.org/~nenolod/ASA-2012-12-31.txt

Solution :

Upgrade to ShadowIRCd 6.3.3 or later.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P)
CVSS Temporal Score : 4.3
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : true

Family: Misc.

Nessus Plugin ID: 65198 ()

Bugtraq ID: 57085

CVE ID: CVE-2012-6084