National Cyber Awareness System
Vulnerability Summary for CVE-2012-6084
Original release date:01/01/2013
Last revised:02/02/2013
Source:
US-CERT/NIST
Overview
modules/m_capab.c in (1) ircd-ratbox before 3.0.8 and (2) Charybdis before 3.4.2 does not properly support capability negotiation during server handshakes, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a malformed request.
Description
Per http://cwe.mitre.org/data/definitions/476.html 'NULL Pointer Dereference'
Impact
CVSS Severity (version 2.0):
Impact Subscore:
2.9
Exploitability Subscore:
10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type:Allows disruption of serviceUnknown
References to Advisories, Solutions, and Tools
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External Source: CONFIRM
Name: https://github.com/atheme/charybdis/commit/ac0707aa61d9c20e9b09062294701567c9f41595.patch
Type: Patch Information
External Source: CONFIRM
Name: http://www.stack.nl/~jilles/irc/charybdis-3.4.2.tbz2
Type: Patch Information
External Source: CONFIRM
Name: http://www.ratbox.org/download/ircd-ratbox-3.0.8.tar.bz2
Type: Patch Information
External Source: MLIST
Name: [oss-security] 20130101 Re: Charybdis: Improper assumptions in the server handshake code may lead to a remote crash
Type: Patch Information
External Source: DEBIAN
Name: DSA-2612
External Source: CONFIRM
Name: http://rabbit.dereferenced.org/~nenolod/ASA-2012-12-31.txt
