{"id":"CVE-2024-31309","aliases":["ALPINE-CVE-2024-31309","DEBIAN-CVE-2024-31309","DLA-3799-1","DSA-5659-1","EUVD-2024-29205","GHSA-7hpg-wrjj-gghq","UBUNTU-CVE-2024-31309"],"status":"published","title":"Apache Traffic Server: HTTP/2 CONTINUATION frames can be utilized for DoS attack","description":"HTTP/2 CONTINUATION DoS attack can cause Apache Traffic Server to consume more resources on the server.  Version from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.3 are affected.\n\nUsers can set a new setting (proxy.config.http2.max_continuation_frames_per_minute) to limit the number of CONTINUATION frames per minute.  ATS does have a fixed amount of memory a request can use and ATS adheres to these limits in previous releases.\nUsers are recommended to upgrade to versions 8.1.10 or 9.2.4 which fixes the issue.","severity":{"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":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.92453,"percentile":0.99828,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2024-04-10T12:07:16Z","modified":"2026-11-03T06:32:07Z","fixes":[{"ecosystem":"Alpine:v3.21","package":"trafficserver9","fixed_in":["9.2.4-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"trafficserver9","fixed_in":["9.2.4-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"trafficserver9","fixed_in":["9.2.4-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"trafficserver9","fixed_in":["9.2.4-r0"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"trafficserver","fixed_in":["9.2.4+ds-0+deb12u1"],"sources":["osv"]},{"ecosystem":"Debian:10","package":"trafficserver","fixed_in":["8.1.7-0+deb10u4"],"sources":["osv"]},{"ecosystem":"Debian:11","package":"trafficserver","fixed_in":["8.1.10+ds-1~deb11u1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.21","package":"trafficserver9","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.2.4-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"trafficserver9","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.2.4-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"trafficserver9","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.2.4-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"trafficserver9","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.2.4-r0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.2.4+ds-0+deb12u1"}]}],"versions":["9.2.0+ds-2","9.2.0+ds-2+deb12u1","9.2.1+ds-1","9.2.2+ds-1","9.2.3+ds-1","9.2.3+ds-1+deb12u1"]},{"source":"osv","ecosystem":"Debian:10","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.1.7-0+deb10u4"}]}],"versions":["8.0.2+ds-1","8.0.2+ds-1+deb10u1","8.0.2+ds-1+deb10u2","8.0.2+ds-1+deb10u3","8.0.2+ds-1+deb10u4","8.0.2+ds-1+deb10u5","8.0.2+ds-1+deb10u6","8.0.2+ds-1+deb10u7","8.0.3+ds-1","8.0.3+ds-2","8.0.3+ds-3","8.0.3+ds-4","8.0.5+ds-1","8.0.5+ds-2","8.0.5+ds-3","8.0.6+ds-1","8.0.7+ds-1","8.0.8+ds-1","8.0.8+ds-2","8.1.0+ds-1","8.1.0+ds-2","8.1.1+ds-1","8.1.1+ds-1.1","8.1.5+ds-1~deb11u1","8.1.6+ds-1~deb10u1","8.1.6+ds-1~deb11u1","8.1.7-0+deb10u1","8.1.7-0+deb10u2","8.1.7-0+deb10u3"]},{"source":"osv","ecosystem":"Debian:11","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.1.10+ds-1~deb11u1"}]}],"versions":["8.1.1+ds-1.1","8.1.1+ds-1.1+deb11u1","8.1.5+ds-1~deb11u1","8.1.6+ds-1~deb10u1","8.1.6+ds-1~deb11u1","8.1.7+ds-1~deb11u1","8.1.9+ds-1~deb11u1"]},{"source":"osv","ecosystem":"Debian:12","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.2.4+ds-0+deb12u1"}]}],"versions":["9.2.0+ds-2","9.2.0+ds-2+deb12u1","9.2.1+ds-1","9.2.2+ds-1","9.2.3+ds-1","9.2.3+ds-1+deb12u1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.3.0-2ubuntu1","5.3.0-2ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.0.0-5","7.1.2+ds-2","7.1.2+ds-2build1","7.1.2+ds-3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.0.5+ds-1","8.0.5+ds-2","8.0.5+ds-2build1","8.0.5+ds-2ubuntu1","8.0.5+ds-3","8.0.5+ds-3ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.1.1+ds-1.1","9.1.1+ds-2build1","9.1.1+ds-2ubuntu0.1~esm1","9.1.1+ds-2ubuntu0.1","9.1.1+ds-2ubuntu0.1+esm1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["9.2.1+ds-1build1","9.2.2+ds-1","9.2.3+ds-1","9.2.3+ds-1+deb12u1","9.2.3+ds-1+deb12u1build1","9.2.3+ds-1+deb12u1build3","9.2.3+ds-1+deb12u1build4","9.2.3+ds-1+deb12u1ubuntu0.1"]}],"products":[{"vendor":"apache","product":"traffic_server"},{"vendor":"apache software foundation","product":"apache traffic server"},{"vendor":"debian","product":"debian_linux"},{"vendor":"fedoraproject","product":"fedora"}],"references":[{"url":"https://lists.apache.org/thread/f9qh3g3jvy153wh82pz4onrfj1wh13kc","tags":["vendor-advisory","x_transferred","Mailing List","Vendor Advisory","advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QV77HYM7ARSTL3B6U3IFG7PHDU65WL4I/","tags":["x_transferred","Third Party Advisory","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T3XON6RM5ZKCZ6K6NB7BOTAWMJQKXJDO/","tags":["x_transferred","Third Party Advisory","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PBKLPQ6ECG4PGEPRCYI3Y3OITNDEFCCV/","tags":["x_transferred","Third Party Advisory","web"]},{"url":"https://lists.debian.org/debian-lts-announce/2024/04/msg00021.html","tags":["x_transferred","Mailing List","Third Party Advisory","web"]},{"url":"http://www.openwall.com/lists/oss-security/2024/04/03/16","tags":["x_transferred","Mailing List","web"]},{"url":"http://www.openwall.com/lists/oss-security/2024/04/10/7","tags":["x_transferred","Mailing List","web"]},{"url":"https://www.kb.cert.org/vuls/id/421644","tags":["web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-31309","tags":["advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QV77HYM7ARSTL3B6U3IFG7PHDU65WL4I"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T3XON6RM5ZKCZ6K6NB7BOTAWMJQKXJDO"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PBKLPQ6ECG4PGEPRCYI3Y3OITNDEFCCV"},{"url":"https://github.com/advisories/GHSA-7hpg-wrjj-gghq"},{"url":"https://security.alpinelinux.org/vuln/CVE-2024-31309","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/31xxx/CVE-2024-31309.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2024-31309","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2024-31309","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2269627","tags":["report"]},{"url":"https://github.com/apache/trafficserver/commit/d8cb125e55ad7f9cc043e655f7ef25acbbbe0a2c","tags":["report"]},{"url":"https://github.com/apache/trafficserver/pull/11207","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2024-31309","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2024-31309","title":"Apache Traffic Server: HTTP/2 CONTINUATION frames can be utilized for DoS attack","description":"HTTP/2 CONTINUATION DoS attack can cause Apache Traffic Server to consume more resources on the server.  Version from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.3 are affected.\n\nUsers can set a new setting (proxy.config.http2.max_continuation_frames_per_minute) to limit the number of CONTINUATION frames per minute.  ATS does have a fixed amount of memory a request can use and ATS adheres to these limits in previous releases.\nUsers are recommended to upgrade to versions 8.1.10 or 9.2.4 which fixes the issue.","status":"published","published":"2024-04-10T12:07:16.975Z","modified":"2025-11-04T18:30:48.185Z","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":"adp"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:34:14.308905Z"}],"euvd":[{"id":"EUVD-2024-29205","description":"HTTP/2 CONTINUATION DoS attack can cause Apache Traffic Server to consume more resources on the server.  Version from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.3 are affected.\n\nUsers can set a new setting (proxy.config.http2.max_continuation_frames_per_minute) to limit the number of CONTINUATION frames per minute.  ATS does have a fixed amount of memory a request can use and ATS adheres to these limits in previous releases.\nUsers are recommended to upgrade to versions 8.1.10 or 9.2.4 which fixes the issue.","status":"published","published":"2024-04-10T12:07:16Z","modified":"2025-11-04T18:30:48Z","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":"2026-11-02T19:49:23.324829Z"}],"ghsa":[{"id":"GHSA-7hpg-wrjj-gghq","title":"HTTP/2 CONTINUATION DoS attack can cause Apache Traffic Server to consume more resources on the...","description":"HTTP/2 CONTINUATION DoS attack can cause Apache Traffic Server to consume more resources on the server.  Version from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.3 are affected.\n\nUsers can set a new setting (proxy.config.http2.max_continuation_frames_per_minute) to limit the number of CONTINUATION frames per minute.  ATS does have a fixed amount of memory a request can use and ATS adheres to these limits in previous releases.\nUsers are recommended to upgrade to versions 8.1.10 or 9.2.4 which fixes the issue.","status":"published","published":"2024-04-10T15:30:40Z","modified":"2025-11-04T21:31:26Z","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-20"],"updated_at":"2026-11-02T15:04:37.024156Z"}],"nvd":[{"id":"CVE-2024-31309","description":"HTTP/2 CONTINUATION DoS attack can cause Apache Traffic Server to consume more resources on the server.  Version from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.3 are affected.\n\nUsers can set a new setting (proxy.config.http2.max_continuation_frames_per_minute) to limit the number of CONTINUATION frames per minute.  ATS does have a fixed amount of memory a request can use and ATS adheres to these limits in previous releases.\nUsers are recommended to upgrade to versions 8.1.10 or 9.2.4 which fixes the issue.","status":"published","published":"2024-04-10T12:15:09.257Z","modified":"2026-06-17T07:28:10.03Z","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":"secondary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:09:49.255123Z"}],"osv":[{"id":"ALPINE-CVE-2024-31309","description":"HTTP/2 CONTINUATION DoS attack can cause Apache Traffic Server to consume more resources on the server.  Version from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.3 are affected.\n\nUsers can set a new setting (proxy.config.http2.max_continuation_frames_per_minute) to limit the number of CONTINUATION frames per minute.  ATS does have a fixed amount of memory a request can use and ATS adheres to these limits in previous releases.\nUsers are recommended to upgrade to versions 8.1.10 or 9.2.4 which fixes the issue.","status":"published","published":"2024-04-10T12:15:09.257Z","modified":"2026-11-03T06:32:07.199614985Z","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":"2026-11-03T07:18:15.355745Z"},{"id":"CVE-2024-31309","title":"Apache Traffic Server: HTTP/2 CONTINUATION frames can be utilized for DoS attack","description":"HTTP/2 CONTINUATION DoS attack can cause Apache Traffic Server to consume more resources on the server.  Version from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.3 are affected.\n\nUsers can set a new setting (proxy.config.http2.max_continuation_frames_per_minute) to limit the number of CONTINUATION frames per minute.  ATS does have a fixed amount of memory a request can use and ATS adheres to these limits in previous releases.\nUsers are recommended to upgrade to versions 8.1.10 or 9.2.4 which fixes the issue.","status":"published","published":"2024-04-10T12:07:16.975Z","modified":"2026-10-28T02:30:38.298334944Z","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-20"],"updated_at":"2026-11-02T15:44:40.06138Z"},{"id":"DEBIAN-CVE-2024-31309","description":"HTTP/2 CONTINUATION DoS attack can cause Apache Traffic Server to consume more resources on the server.  Version from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.3 are affected.  Users can set a new setting (proxy.config.http2.max_continuation_frames_per_minute) to limit the number of CONTINUATION frames per minute.  ATS does have a fixed amount of memory a request can use and ATS adheres to these limits in previous releases. Users are recommended to upgrade to versions 8.1.10 or 9.2.4 which fixes the issue.","status":"published","published":"2024-04-10T12:15:09.257Z","modified":"2026-11-02T12:01:50.699651511Z","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":"2026-11-02T15:45:42.530184Z"},{"id":"UBUNTU-CVE-2024-31309","description":"HTTP/2 CONTINUATION DoS attack can cause Apache Traffic Server to consume more resources on the server.  Version from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.3 are affected. Users can set a new setting (proxy.config.http2.max_continuation_frames_per_minute) to limit the number of CONTINUATION frames per minute.  ATS does have a fixed amount of memory a request can use and ATS adheres to these limits in previous releases. Users are recommended to upgrade to versions 8.1.10 or 9.2.4 which fixes the issue.","status":"published","published":"2024-04-10T12:15:00Z","modified":"2026-04-22T14:49:34.586899Z","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":"2026-11-02T16:54:48.333535Z"},{"id":"DLA-3799-1","title":"trafficserver - security update","status":"published","published":"2024-04-28T00:00:00Z","modified":"2026-03-09T01:20:14.200082Z","updated_at":"2026-11-02T15:46:12.203458Z"},{"id":"DSA-5659-1","title":"trafficserver - security update","status":"published","published":"2024-04-14T00:00:00Z","modified":"2026-03-09T02:10:03.000022Z","updated_at":"2026-11-02T15:46:17.892347Z"}]}}