CVE-2009-4016
ircd-hybrid ircd-ratbox - arbitrary code execution
EPSS 4.0%
Description
Integer 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 before 1.6.8, when flatten_links is disabled, allows remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via a LINKS command.
How to fix CVE-2009-4016
To remediate CVE-2009-4016, upgrade the affected package to a fixed version below.
- Debian/ircd-hybrid—upgrade to 1:7.2.2.dfsg.2-6.1 or later
- Debian/ircd-hybrid—upgrade to 1:7.2.2.dfsg.2-3+etch1 or later
- —upgrade to 2.2.8.dfsg-2+lenny1 or later
Is CVE-2009-4016 being exploited?
Low — EPSS is 4.0%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 1:7.2.2.dfsg.2-6.1
- from 0, < 1:7.2.2.dfsg.2-3+etch1
- from 0, < 2.2.8.dfsg-2+lenny1