{"id":"CVE-2020-6062","aliases":["DEBIAN-CVE-2020-6062","DSA-4711-1","EUVD-2020-27216","GHSA-8m27-48h2-7f6h","MGASA-2020-0254","UBUNTU-CVE-2020-6062","USN-4415-1"],"status":"published","title":"An exploitable denial-of-service vulnerability exists in the way CoTURN 4.5.1.1 web server parses...","description":"An exploitable denial-of-service vulnerability exists in the way CoTURN 4.5.1.1 web server parses POST requests. A specially crafted HTTP POST request can lead to server crash and denial of service. An attacker needs to send an HTTP request to trigger this vulnerability.","severity":{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0627,"percentile":0.93632,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-476"],"published":"2020-02-19T18:25:22Z","modified":"2026-10-26T12:02:50Z","fixes":[{"ecosystem":"Debian:12","package":"coturn","fixed_in":["4.5.1.1-1.2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"coturn","fixed_in":["4.5.1.1-1.2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"coturn","fixed_in":["4.5.1.1-1.2"],"sources":["osv"]},{"ecosystem":"Ubuntu:16.04:LTS","package":"coturn","fixed_in":["4.5.0.3-1ubuntu0.3"],"sources":["osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"coturn","fixed_in":["4.5.0.7-1ubuntu2.18.04.2"],"sources":["osv"]},{"ecosystem":"Ubuntu:20.04:LTS","package":"coturn","fixed_in":["4.5.1.1-1.1ubuntu0.20.04.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"coturn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.1.1-1.2"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"coturn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.1.1-1.2"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"coturn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.1.1-1.2"}]}]},{"source":"osv","ecosystem":"Debian:9","package":"coturn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.0.5-1+deb9u2"}]}],"versions":["4.5.0.5-1","4.5.0.5-1+deb9u1"],"bundled":3},{"source":"osv","ecosystem":"Debian:10","package":"coturn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.1.1-1.1+deb10u1"}]}],"versions":["4.5.1.1-1.1"],"bundled":3},{"source":"osv","ecosystem":"Mageia:7","package":"coturn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.0.7-2.3.mga7"}]}],"bundled":2},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"coturn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.0.3-1ubuntu0.3"}]}],"versions":["4.4.5.4-2","4.5.0.2-3","4.5.0.3-1","4.5.0.3-1build1","4.5.0.3-1ubuntu0.2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"coturn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.0.7-1ubuntu2.18.04.2"}]}],"versions":["4.5.0.6-1ubuntu2","4.5.0.7-1ubuntu1","4.5.0.7-1ubuntu2","4.5.0.7-1ubuntu2.18.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"coturn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.1.1-1.1ubuntu0.20.04.1"}]}],"versions":["4.5.1.1-1.1build1","4.5.1.1-1.1build2"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"coturn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.0.3-1ubuntu0.3"}]}],"versions":["4.4.5.4-2","4.5.0.2-3","4.5.0.3-1","4.5.0.3-1build1","4.5.0.3-1ubuntu0.2"],"bundled":3},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"coturn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.0.7-1ubuntu2.18.04.2"}]}],"versions":["4.5.0.6-1ubuntu2","4.5.0.7-1ubuntu1","4.5.0.7-1ubuntu2","4.5.0.7-1ubuntu2.18.04.1"],"bundled":3},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"coturn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.1.1-1.1ubuntu0.20.04.1"}]}],"versions":["4.5.1.1-1.1build1","4.5.1.1-1.1build2"],"bundled":3}],"products":[{"vendor":"canonical","product":"ubuntu_linux"},{"vendor":"coturn","product":"coturn"},{"vendor":"coturn_project","product":"coturn"},{"vendor":"debian","product":"debian_linux"},{"vendor":"fedoraproject","product":"fedora"}],"references":[{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HQZZPI34LAS3SFNW6Z2ZJ46RKVGEODNA/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XN2NK6FT7AMW5UIZNXDNHKEAYWAUMGSF/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OUVZRXW5ZIGWVKOLF3NPXRPP74YX7BUY/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://www.debian.org/security/2020/dsa-4711","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory"]},{"url":"https://usn.ubuntu.com/4415-1/","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","Third Party Advisory","advisory"]},{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2020-0985","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-6062"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HQZZPI34LAS3SFNW6Z2ZJ46RKVGEODNA/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OUVZRXW5ZIGWVKOLF3NPXRPP74YX7BUY/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XN2NK6FT7AMW5UIZNXDNHKEAYWAUMGSF/"},{"url":"https://github.com/advisories/GHSA-8m27-48h2-7f6h"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-6062","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2020-0254.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=26413","tags":["report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/XN2NK6FT7AMW5UIZNXDNHKEAYWAUMGSF/","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2020-6062","tags":["report"]},{"url":"https://github.com/coturn/coturn/commit/e09bcd9f7af5b32c81b37f51835b384b5a7d03a8","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-4415-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-6062","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2020-4067","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2020-6061","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-6062","description":"An exploitable denial-of-service vulnerability exists in the way CoTURN 4.5.1.1 web server parses POST requests. A specially crafted HTTP POST request can lead to server crash and denial of service. An attacker needs to send an HTTP request to trigger this vulnerability.","status":"published","published":"2020-02-19T18:25:22Z","modified":"2024-08-04T08:47:40.953Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:35:52.268457Z"}],"euvd":[{"id":"EUVD-2020-27216","description":"An exploitable denial-of-service vulnerability exists in the way CoTURN 4.5.1.1 web server parses POST requests. A specially crafted HTTP POST request can lead to server crash and denial of service. An attacker needs to send an HTTP request to trigger this vulnerability.","status":"published","published":"2020-02-19T18:25:22Z","modified":"2024-08-04T08:47:40Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T03:08:04.689205Z"}],"ghsa":[{"id":"GHSA-8m27-48h2-7f6h","title":"An exploitable denial-of-service vulnerability exists in the way CoTURN 4.5.1.1 web server parses...","description":"An exploitable denial-of-service vulnerability exists in the way CoTURN 4.5.1.1 web server parses POST requests. A specially crafted HTTP POST request can lead to server crash and denial of service. An attacker needs to send an HTTP request to trigger this vulnerability.","status":"published","published":"2022-05-24T17:09:22Z","modified":"2023-01-29T05:01:36Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:44:52.185162Z"}],"nvd":[{"id":"CVE-2020-6062","description":"An exploitable denial-of-service vulnerability exists in the way CoTURN 4.5.1.1 web server parses POST requests. A specially crafted HTTP POST request can lead to server crash and denial of service. An attacker needs to send an HTTP request to trigger this vulnerability.","status":"published","published":"2020-02-19T19:15:12.227Z","modified":"2026-06-17T03:22:37.21Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:05:54.796125Z"}],"osv":[{"id":"CVE-2020-6062","description":"An exploitable denial-of-service vulnerability exists in the way CoTURN 4.5.1.1 web server parses POST requests. A specially crafted HTTP POST request can lead to server crash and denial of service. An attacker needs to send an HTTP request to trigger this vulnerability.","status":"published","published":"2020-02-19T19:15:12.227Z","modified":"2026-10-24T10:30:49.884324432Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:16.936975Z"},{"id":"DEBIAN-CVE-2020-6062","description":"An exploitable denial-of-service vulnerability exists in the way CoTURN 4.5.1.1 web server parses POST requests. A specially crafted HTTP POST request can lead to server crash and denial of service. An attacker needs to send an HTTP request to trigger this vulnerability.","status":"published","published":"2020-02-19T19:15:12.227Z","modified":"2026-10-26T12:02:50.137399583Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:34.019707Z"},{"id":"UBUNTU-CVE-2020-6062","description":"An exploitable denial-of-service vulnerability exists in the way CoTURN 4.5.1.1 web server parses POST requests. A specially crafted HTTP POST request can lead to server crash and denial of service. An attacker needs to send an HTTP request to trigger this vulnerability.","status":"published","published":"2020-02-19T19:15:00Z","modified":"2026-02-04T03:51:43.165481Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:25.179924Z"},{"id":"DSA-4711-1","title":"coturn - security update","status":"published","published":"2020-06-29T00:00:00Z","modified":"2026-03-09T02:10:01.048251Z","updated_at":"2026-11-02T15:46:17.19998Z"},{"id":"MGASA-2020-0254","title":"Updated coturn packages fix security vulnerability","description":"Updated the coturn package in order to fix some security\nvulnerabilities:\n\nhttp_server.c: An exploitable heap overflow vulnerability exists in the\nway CoTURN 4.5.1.1 web server parses POST requests. A specially crafted\nHTTP POST request can lead to information leaks and other misbehavior.\nAn attacker needs to send an HTTPS request to trigger this vulnerability\n(CVE-2020-6061).\n\nhttp_server.c An exploitable denial-of-service vulnerability exists in\nthe way CoTURN 4.5.1.1 web server parses POST requests. A specially\ncrafted HTTP POST request can lead to server crash and denial of service.\nAn attacker needs to send an HTTP request to trigger this vulnerability\n(CVE-2020-6062).\n","status":"published","published":"2020-06-10T23:59:36Z","modified":"2026-04-16T04:42:40.015736553Z","updated_at":"2026-11-02T15:49:41.151324Z"},{"id":"USN-4415-1","title":"coturn vulnerabilities","description":"Felix Dörre discovered that coTURN response buffer is not initialized properly.\nAn attacker could possibly use this issue to obtain sensitive information.\n(CVE-2020-4067)\n\nIt was discovered that coTURN web server incorrectly handled HTTP POST requests.\nAn attacker could possibly use this issue to cause a denial of service, obtain\nsensitive information or other unspecified impact.\n(CVE-2020-6061, CVE-2020-6062)\n","status":"published","published":"2020-07-06T17:11:29Z","modified":"2026-02-10T04:41:52Z","updated_at":"2026-11-02T16:58:14.547547Z"}]}}