Debian DSA-1980-1 : ircd-hybrid/ircd-ratbox - integer underflow/denial of service

medium Nessus Plugin ID 44844



The remote Debian host is missing a security-related update.


David Leadbeater discovered an integer underflow that could be triggered via the LINKS command and can lead to a denial of service or the execution of arbitrary code (CVE-2009-4016 ). This issue affects both, ircd-hybrid and ircd-ratbox.

It was discovered that the ratbox IRC server is prone to a denial of service attack via the HELP command. The ircd-hybrid package is not vulnerable to this issue (CVE-2010-0300 ).


Upgrade the ircd-hybrid/ircd-ratbox packages.

For the stable distribution (lenny), this problem has been fixed in version 1:7.2.2.dfsg.2-4+lenny1 of the ircd-hybrid package and in version 2.2.8.dfsg-2+lenny1 of ircd-ratbox.

Due to a bug in the archive software it was not possible to release the fix for the oldstable distribution (etch) simultaneously. The packages will be released as version 7.2.2.dfsg.2-3+etch1 once they become available.

See Also

Plugin Details

Severity: Medium

ID: 44844

File Name: debian_DSA-1980.nasl

Version: 1.11

Type: local

Agent: unix

Published: 2/24/2010

Updated: 1/4/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: Medium

Base Score: 6.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:ircd-ratbox, cpe:/o:debian:debian_linux:5.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Patch Publication Date: 1/27/2010

Reference Information

CVE: CVE-2009-4016, CVE-2010-0300

CWE: 189

DSA: 1980