{"id":"CVE-2009-0478","aliases":["DEBIAN-CVE-2009-0478","DSA-1732-1","EUVD-2009-0482","GHSA-cfw6-qxff-576v"],"status":"published","title":"Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to...","description":"Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to cause a denial of service via an HTTP request with an invalid version number, which triggers a reachable assertion in (1) HttpMsg.c and (2) HttpStatusLine.c.","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":0.71986,"percentile":0.99433,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-20"],"published":"2009-02-08T22:00:00Z","modified":"2026-10-23T17:47:46Z","exploits":[{"source":"exploitdb","id":"EDB-8021","title":"Squid \u003c 3.1 5 - HTTP Version Number Parsing Denial of Service","type":"dos","platform":"multiple","date":"2009-02-09","verified":true,"url":"https://www.exploit-db.com/exploits/8021"}],"fixes":[{"ecosystem":"Debian:12","package":"squid","fixed_in":["2.7.STABLE3-4.1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"squid","fixed_in":["2.7.STABLE3-4.1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"squid","fixed_in":["2.7.STABLE3-4.1"],"sources":["osv"]},{"ecosystem":"Debian:4.0","package":"squid3","fixed_in":["3.0.PRE5-5+etch1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.STABLE3-4.1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.STABLE3-4.1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.STABLE3-4.1"}]}]},{"source":"osv","ecosystem":"Debian:4.0","package":"squid3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.PRE5-5+etch1"}]}],"versions":["3.0.PRE5-5"]}],"products":[{"vendor":"squid","product":"squid"}],"references":[{"url":"http://www.securityfocus.com/bid/33604","tags":["vdb-entry","x_refsource_BID","x_transferred","Exploit","Patch","evidence","fix"]},{"url":"http://secunia.com/advisories/33731","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory","advisory"]},{"url":"http://security.gentoo.org/glsa/glsa-200903-38.xml","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","advisory"]},{"url":"http://www.securityfocus.com/archive/1/500653/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","web"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00000.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=484246","tags":["x_refsource_CONFIRM","x_transferred","report"]},{"url":"http://www.squid-cache.org/Versions/v2/2.7/changesets/12432.patch","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"http://www.securitytracker.com/id?1021684","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","web"]},{"url":"http://www.squid-cache.org/Advisories/SQUID-2009_1.txt","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2009:034","tags":["vendor-advisory","x_refsource_MANDRIVA","x_transferred","advisory"]},{"url":"https://www.exploit-db.com/exploits/8021","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred","web"]},{"url":"http://secunia.com/advisories/34467","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-0478"},{"url":"https://github.com/advisories/GHSA-cfw6-qxff-576v"},{"url":"https://security-tracker.debian.org/tracker/CVE-2009-0478","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2009-0478","description":"Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to cause a denial of service via an HTTP request with an invalid version number, which triggers a reachable assertion in (1) HttpMsg.c and (2) HttpStatusLine.c.","status":"published","published":"2009-02-08T22:00:00Z","modified":"2024-08-07T04:31:26.32Z","updated_at":"2026-11-02T14:33:25.896677Z"}],"euvd":[{"id":"EUVD-2009-0482","description":"Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to cause a denial of service via an HTTP request with an invalid version number, which triggers a reachable assertion in (1) HttpMsg.c and (2) HttpStatusLine.c.","status":"published","published":"2009-02-08T22:00:00Z","modified":"2024-08-07T04:31:26Z","updated_at":"2026-11-03T01:39:25.63342Z"}],"ghsa":[{"id":"GHSA-cfw6-qxff-576v","title":"Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to...","description":"Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to cause a denial of service via an HTTP request with an invalid version number, which triggers a reachable assertion in (1) HttpMsg.c and (2) HttpStatusLine.c.","status":"published","published":"2022-05-02T03:15:50Z","modified":"2023-01-31T05:06:48Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:49:05.898083Z"}],"nvd":[{"id":"CVE-2009-0478","description":"Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to cause a denial of service via an HTTP request with an invalid version number, which triggers a reachable assertion in (1) HttpMsg.c and (2) HttpStatusLine.c.","status":"published","published":"2009-02-08T22:30:00.36Z","modified":"2026-06-16T23:05:07.55Z","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-20"],"updated_at":"2026-11-02T14:01:33.417327Z"}],"osv":[{"id":"CVE-2009-0478","description":"Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to cause a denial of service via an HTTP request with an invalid version number, which triggers a reachable assertion in (1) HttpMsg.c and (2) HttpStatusLine.c.","status":"published","published":"2009-02-08T22:30:00Z","modified":"2026-04-10T03:40:38.446906Z","updated_at":"2026-11-02T15:43:57.452479Z"},{"id":"DEBIAN-CVE-2009-0478","description":"Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to cause a denial of service via an HTTP request with an invalid version number, which triggers a reachable assertion in (1) HttpMsg.c and (2) HttpStatusLine.c.","status":"published","published":"2009-02-08T22:30:00.36Z","modified":"2026-10-23T17:47:46.347310584Z","updated_at":"2026-11-02T15:45:23.742363Z"},{"id":"DSA-1732-1","title":"squid3 - denial of service","status":"published","published":"2009-03-03T00:00:00Z","modified":"2026-03-09T01:21:46.324203Z","updated_at":"2026-11-02T15:46:14.734124Z"}]}}