{"id":"CVE-2009-4008","aliases":["DEBIAN-CVE-2009-4008","DSA-2243-1","EUVD-2009-3979","GHSA-cjjv-pc59-mghf"],"status":"published","title":"Unbound before 1.4.4 does not send responses for signed zones after mishandling an unspecified...","description":"Unbound before 1.4.4 does not send responses for signed zones after mishandling an unspecified query, which allows remote attackers to cause a denial of service (DNSSEC outage) via a crafted query.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02701,"percentile":0.8603,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-399"],"published":"2011-05-27T00:00:00Z","modified":"2026-10-23T17:47:45Z","fixes":[{"ecosystem":"Debian:12","package":"unbound","fixed_in":["1.4.4-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"unbound","fixed_in":["1.4.4-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"unbound","fixed_in":["1.4.4-1"],"sources":["osv"]},{"ecosystem":"Debian:5.0","package":"unbound","fixed_in":["1.4.6-1~lenny1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"unbound","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.4-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"unbound","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.4-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"unbound","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.4-1"}]}]},{"source":"osv","ecosystem":"Debian:5.0","package":"unbound","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.6-1~lenny1"}]}],"versions":["1.0.2-1","1.0.2-1+lenny1","1.0.2-1.1","1.0.2-1.2","1.2.1-1","1.2.1-1~bpo40+1","1.2.1-2","1.3.0-1","1.3.2-1","1.3.3-1","1.3.4-1","1.4.0-1","1.4.1-1","1.4.1-2","1.4.2-1","1.4.3-1","1.4.4-1","1.4.5-1","1.4.5-1~bpo50+1","1.4.6-1~bpo50+1"]}],"products":[{"vendor":"nlnetlabs","product":"unbound"}],"references":[{"url":"http://unbound.nlnetlabs.nl/downloads/unbound-1.4.4.tar.gz","tags":["x_refsource_MISC","x_transferred","Patch","fix"]},{"url":"http://packages.debian.org/changelogs/pool/main/u/unbound/unbound_1.4.6-1/changelog","tags":["x_refsource_MISC","x_transferred","web"]},{"url":"http://www.debian.org/security/2011/dsa-2243","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-4008"},{"url":"https://github.com/advisories/GHSA-cjjv-pc59-mghf"},{"url":"https://security-tracker.debian.org/tracker/CVE-2009-4008","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2009-4008","description":"Unbound before 1.4.4 does not send responses for signed zones after mishandling an unspecified query, which allows remote attackers to cause a denial of service (DNSSEC outage) via a crafted query.","status":"published","published":"2011-06-02T20:00:00Z","modified":"2024-09-16T18:38:27.857Z","updated_at":"2026-11-02T14:33:24.782697Z"}],"euvd":[{"id":"EUVD-2009-3979","description":"Unbound before 1.4.4 does not send responses for signed zones after mishandling an unspecified query, which allows remote attackers to cause a denial of service (DNSSEC outage) via a crafted query.","status":"published","published":"2011-06-02T20:00:00Z","modified":"2024-09-16T18:38:27Z","updated_at":"2026-11-03T00:55:31.048035Z"}],"ghsa":[{"id":"GHSA-cjjv-pc59-mghf","title":"Unbound before 1.4.4 does not send responses for signed zones after mishandling an unspecified...","description":"Unbound before 1.4.4 does not send responses for signed zones after mishandling an unspecified query, which allows remote attackers to cause a denial of service (DNSSEC outage) via a crafted query.","status":"published","published":"2022-05-02T03:50:40Z","modified":"2023-01-31T05:09:21Z","updated_at":"2026-11-02T14:49:30.42259Z"}],"nvd":[{"id":"CVE-2009-4008","description":"Unbound before 1.4.4 does not send responses for signed zones after mishandling an unspecified query, which allows remote attackers to cause a denial of service (DNSSEC outage) via a crafted query.","status":"published","published":"2011-06-02T20:55:01.763Z","modified":"2026-06-16T23:12:49.017Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-399"],"updated_at":"2026-11-02T14:01:38.684719Z"}],"osv":[{"id":"CVE-2009-4008","description":"Unbound before 1.4.4 does not send responses for signed zones after mishandling an unspecified query, which allows remote attackers to cause a denial of service (DNSSEC outage) via a crafted query.","status":"published","published":"2011-06-02T20:55:01Z","modified":"2026-04-10T03:40:58.775078Z","updated_at":"2026-11-02T15:43:57.714116Z"},{"id":"DEBIAN-CVE-2009-4008","description":"Unbound before 1.4.4 does not send responses for signed zones after mishandling an unspecified query, which allows remote attackers to cause a denial of service (DNSSEC outage) via a crafted query.","status":"published","published":"2011-06-02T20:55:01.763Z","modified":"2026-10-23T17:47:45.593698513Z","updated_at":"2026-11-02T15:45:24.013654Z"},{"id":"DSA-2243-1","title":"unbound - design flaw","status":"published","published":"2011-05-27T00:00:00Z","modified":"2026-03-09T01:21:31.570261Z","updated_at":"2026-11-02T15:46:15.108335Z"}]}}