{"id":"CVE-2024-28871","aliases":["DEBIAN-CVE-2024-28871","EUVD-2024-25941","GHSA-ffr2-45w9-7wmg","UBUNTU-CVE-2024-28871","USN-7814-1","openSUSE-SU-2024:14016-1"],"status":"published","title":"Excessive CPU used on malformed traffic","description":"LibHTP is a security-aware parser for the HTTP protocol and the related bits and pieces. Version 0.5.46 may parse malformed request traffic, leading to excessive CPU usage. Version 0.5.47 contains a patch for the issue. No known workarounds are available.","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":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00841,"percentile":0.58144,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-770"],"published":"2024-04-04T14:46:02Z","modified":"2026-11-02T12:02:05Z","fixes":[{"ecosystem":"Debian:13","package":"libhtp","fixed_in":["1:0.5.47-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:20.04:LTS","package":"libhtp","fixed_in":["1:0.5.32-1ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:22.04:LTS","package":"libhtp","fixed_in":["1:0.5.39-1ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:24.04:LTS","package":"libhtp","fixed_in":["1:0.5.46-1ubuntu2+esm1"],"sources":["osv"]},{"ecosystem":"openSUSE:Tumbleweed","package":"libhtp","fixed_in":["0.5.48-2.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:13","package":"libhtp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:0.5.47-1"}]}]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"libhtp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:0.5.32-1ubuntu0.1~esm1"}]}],"versions":["1:0.5.30-1","1:0.5.31-1","1:0.5.32-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"libhtp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:0.5.39-1ubuntu0.1~esm1"}]}],"versions":["1:0.5.36-1","1:0.5.38-1","1:0.5.39-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"libhtp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:0.5.46-1ubuntu2+esm1"}]}],"versions":["1:0.5.45-1","1:0.5.46-1ubuntu1","1:0.5.46-1ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"libhtp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.5.15-1ubuntu0.1~esm1"}]}],"versions":["0.5.15-1"],"bundled":4},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"libhtp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:0.5.26-1ubuntu0.1~esm1"}]}],"versions":["1:0.5.25-1","1:0.5.26-1"],"bundled":4},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"libhtp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:0.5.32-1ubuntu0.1~esm1"}]}],"versions":["1:0.5.30-1","1:0.5.31-1","1:0.5.32-1"],"bundled":4},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"libhtp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:0.5.39-1ubuntu0.1~esm1"}]}],"versions":["1:0.5.36-1","1:0.5.38-1","1:0.5.39-1"],"bundled":4},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"libhtp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:0.5.46-1ubuntu2+esm1"}]}],"versions":["1:0.5.45-1","1:0.5.46-1ubuntu1","1:0.5.46-1ubuntu2"],"bundled":4},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"libhtp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.5.48-2.1"}]}]}],"products":[{"vendor":"oisf","product":"libhtp"}],"references":[{"url":"https://github.com/OISF/libhtp/security/advisories/GHSA-ffr2-45w9-7wmg","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","report"]},{"url":"https://github.com/OISF/libhtp/commit/79e713f3e527593a45f545e854cd9e6fbb3cd3ed","tags":["x_refsource_MISC","x_transferred","Patch","fix","report"]},{"url":"https://github.com/OISF/libhtp/commit/bf618ec7f243cebfb0f7e84c3cb158955cb32b4d","tags":["x_refsource_MISC","x_transferred","Patch","fix","report"]},{"url":"https://redmine.openinfosecfoundation.org/issues/6757","tags":["x_refsource_MISC","x_transferred","Issue Tracking","web","report"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/28xxx/CVE-2024-28871.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-28871","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2024-28871","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2024-28871","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2024-28871","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-7814-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2024-23837","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2024-45797","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2025-53537","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2024-28871","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2024-28871","title":"Excessive CPU used on malformed traffic","description":"LibHTP is a security-aware parser for the HTTP protocol and the related bits and pieces. Version 0.5.46 may parse malformed request traffic, leading to excessive CPU usage. Version 0.5.47 contains a patch for the issue. No known workarounds are available.","status":"published","published":"2024-04-04T14:46:02.803Z","modified":"2024-08-26T20:45:59.274Z","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":"cna"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T14:34:18.597034Z"}],"euvd":[{"id":"EUVD-2024-25941","description":"LibHTP is a security-aware parser for the HTTP protocol and the related bits and pieces. Version 0.5.46 may parse malformed request traffic, leading to excessive CPU usage. Version 0.5.47 contains a patch for the issue. No known workarounds are available.","status":"published","published":"2024-04-04T14:46:02Z","modified":"2024-08-26T20:45:59Z","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":"2026-11-03T00:56:10.956482Z"}],"nvd":[{"id":"CVE-2024-28871","description":"LibHTP is a security-aware parser for the HTTP protocol and the related bits and pieces. Version 0.5.46 may parse malformed request traffic, leading to excessive CPU usage. Version 0.5.47 contains a patch for the issue. No known workarounds are available.","status":"published","published":"2024-04-04T15:15:38.647Z","modified":"2026-06-17T07:21:56.777Z","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-770"],"updated_at":"2026-11-02T14:09:48.152273Z"}],"osv":[{"id":"CVE-2024-28871","title":"Excessive CPU used on malformed traffic","description":"LibHTP is a security-aware parser for the HTTP protocol and the related bits and pieces. Version 0.5.46 may parse malformed request traffic, leading to excessive CPU usage. Version 0.5.47 contains a patch for the issue. No known workarounds are available.","status":"published","published":"2024-04-04T14:46:02.803Z","modified":"2026-10-28T10:43:36.258784113Z","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-770"],"updated_at":"2026-11-02T15:44:40.06138Z"},{"id":"DEBIAN-CVE-2024-28871","description":"LibHTP is a security-aware parser for the HTTP protocol and the related bits and pieces. Version 0.5.46 may parse malformed request traffic, leading to excessive CPU usage. Version 0.5.47 contains a patch for the issue. No known workarounds are available.","status":"published","published":"2024-04-04T15:15:38.647Z","modified":"2026-11-02T12:02:05.129118343Z","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-2024-28871","description":"LibHTP is a security-aware parser for the HTTP protocol and the related bits and pieces. Version 0.5.46 may parse malformed request traffic, leading to excessive CPU usage. Version 0.5.47 contains a patch for the issue. No known workarounds are available.","status":"published","published":"2024-04-04T15:15:00Z","modified":"2026-04-22T14:47:52.688561Z","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":"openSUSE-SU-2024:14016-1","title":"libhtp-devel-0.5.48-2.1 on GA media","description":"These are all security issues fixed in the libhtp-devel-0.5.48-2.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2025-05-07T18:15:59.438965Z","updated_at":"2026-11-02T16:58:36.662953Z"},{"id":"USN-7814-1","title":"libhtp vulnerabilities","description":"It was discovered that LibHTP did not correctly handle certain HTTP\nheaders. A remote attacker could possibly use this issue to cause a denial\nof service. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS,\nUbuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2024-23837)\n\nIt was discovered that LibHTP did not correctly parse certain HTTP\nrequests. A remote attacker could possibly use this issue to cause a\ndenial of service. This issue only affected Ubuntu 20.04 LTS,\nUbuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-28871)\n\nIt was discovered that LibHTP did not correctly parse certain HTTP\nrequests. A remote attacker could possibly use this issue to cause a\ndenial of service. (CVE-2024-45797)\n\nIt was discovered that LibHTP did not correctly handle certain memory\noperations. A remote attacker could possibly use this issue to cause a\ndenial of service. This issue only affected Ubuntu 20.04 LTS,\nUbuntu 22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 25.04. (CVE-2025-53537)","status":"published","published":"2025-10-09T02:15:21Z","modified":"2026-06-25T13:32:31.171355373Z","updated_at":"2026-11-02T16:58:21.91885Z"}]}}