{"id":"DEBIAN-CVE-2009-1959","details":"Off-by-one error in the event_wallops function in fe-common/irc/fe-events.c in irssi 0.8.13 allows remote IRC servers to cause a denial of service (crash) via an empty command, which triggers a one-byte buffer under-read and a one-byte buffer underflow.","modified":"2026-09-11T06:47:27.060241796Z","published":"2009-06-08T01:00:00.767Z","upstream":["CVE-2009-1959"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2009-1959"}],"affected":[{"package":{"name":"irssi","ecosystem":"Debian:12","purl":"pkg:deb/debian/irssi?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.8.13-2"}]}],"ecosystem_specific":{"urgency":"low"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2009-1959.json"}},{"package":{"name":"irssi","ecosystem":"Debian:13","purl":"pkg:deb/debian/irssi?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.8.13-2"}]}],"ecosystem_specific":{"urgency":"low"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2009-1959.json"}},{"package":{"name":"irssi","ecosystem":"Debian:14","purl":"pkg:deb/debian/irssi?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.8.13-2"}]}],"ecosystem_specific":{"urgency":"low"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2009-1959.json"}}],"schema_version":"1.9.0"}