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Vulnerability record · CVE-2012-6084 · published 1 January 2013

CVE-2012-6084: Ircd-ratbox vulnerability

IIrcd Ratbox · Ircd Ratbox

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.

5.0 CVSS 2.0 Medium EPSS 3.0% · top 13.0%
5.0CVSS 2.0 base score
3.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
12References
16 Jun 2026Last modified by NVD

Description

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.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://openwall.com/lists/oss-security/2013/01/01/4 Patch
http://rabbit.dereferenced.org/~nenolod/ASA-2012-12-31.txt
http://www.debian.org/security/2013/dsa-2612
http://www.ratbox.org/download/ircd-ratbox-3.0.8.tar.bz2 Patch
http://www.stack.nl/~jilles/irc/charybdis-3.4.2.tbz2 Patch
https://github.com/atheme/charybdis/commit/ac0707aa61d9c20e9b09062294701567c9f41595.patch Patch
http://openwall.com/lists/oss-security/2013/01/01/4 Patch
http://rabbit.dereferenced.org/~nenolod/ASA-2012-12-31.txt
http://www.debian.org/security/2013/dsa-2612
http://www.ratbox.org/download/ircd-ratbox-3.0.8.tar.bz2 Patch
http://www.stack.nl/~jilles/irc/charybdis-3.4.2.tbz2 Patch
https://github.com/atheme/charybdis/commit/ac0707aa61d9c20e9b09062294701567c9f41595.patch Patch

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2015-5290Ircd-ratbox memory buffer overflow vulnerabilityA Denial of Service vulnerability exists in ircd-ratbox 3.0.9 in the MONITOR Command Handler.EPSS 1.9%6.8CVE-2009-4016Ircd-hybrid vulnerabilityInteger underflow in the clean_string function in irc_string.c in (1) IRCD-hybrid 7.2.2 and 7.2.3, (2) ircd-ratbox before 2.2.9, and (3) oftc-hybrid …EPSS 4.0%5.0CVE-2010-0300Ircd-ratbox vulnerabilitycache.c in ircd-ratbox before 2.2.9 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a HELP comma…EPSS 2.2%5.0CVE-2007-2786Ircd-ratbox vulnerabilityRatbox IRC Daemon (aka ircd-ratbox) 2.2.5 and earlier allows remote attackers to cause a denial of service (resource exhaustion) by making many reque…EPSS 1.7%5.0CVE-2004-0605Ircd-hybrid vulnerabilityNon-registered IRC users using (1) ircd-hybrid 7.0.1 and earlier, (2) ircd-ratbox 1.5.1 and earlier, or (3) ircd-ratbox 2.0rc6 and earlier do not hav…EPSS 7.3%

Source: NIST National Vulnerability Database (record CVE-2012-6084), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.