{"id":"UBUNTU-CVE-2009-4016","details":"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(daemon crash) via a LINKS command.","modified":"2025-07-16T08:15:48.837589Z","published":"2010-02-04T20:15:00Z","withdrawn":"2025-07-18T16:42:39Z","upstream":["CVE-2009-4016"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2009-4016"},{"type":"REPORT","url":"http://www.debian.org/security/2010/dsa-1980"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2009-4016"}],"affected":[{"package":{"name":"ircd-ratbox","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/ircd-ratbox@3.0.8.dfsg-1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.8.dfsg-1"}]}],"versions":["3.0.7.dfsg-3"],"ecosystem_specific":{"binaries":[{"binary_name":"ircd-ratbox","binary_version":"3.0.8.dfsg-1"},{"binary_name":"ircd-ratbox-dbg","binary_version":"3.0.8.dfsg-1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2009/UBUNTU-CVE-2009-4016.json"}}],"schema_version":"1.7.3","severity":[{"type":"Ubuntu","score":"medium"}]}