CVE-2012-6084

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-01-01 · updated 2026-06-16

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.

Affected products

Ircd-Ratbox: 1.0, 1.1.1, 1.1.2, 1.2.1, 1.2.2, 1.2.3 (+45)
ircd-ratbox: through 3.0.7

References

http://openwall.com/lists/oss-security/2013/01/01/4
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
http://www.stack.nl/~jilles/irc/charybdis-3.4.2.tbz2
https://github.com/atheme/charybdis/commit/ac0707aa61d9c20e9b09062294701567c9f41595.patch
http://openwall.com/lists/oss-security/2013/01/01/4
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
http://www.stack.nl/~jilles/irc/charybdis-3.4.2.tbz2
https://github.com/atheme/charybdis/commit/ac0707aa61d9c20e9b09062294701567c9f41595.patch

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