{"id":"UBUNTU-CVE-2019-17420","details":"In OISF LibHTP before 0.5.31, as used in Suricata 4.1.4 and other products, an HTTP protocol parsing error causes the http_header signature to not alert on a response with a single \\r\\n ending.","modified":"2026-04-22T12:13:07.873616Z","published":"2019-10-10T01:06:00Z","upstream":["CVE-2019-17420"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-17420"},{"type":"REPORT","url":"https://github.com/OISF/libhtp/pull/213"},{"type":"REPORT","url":"https://github.com/OISF/libhtp/compare/0.5.30...0.5.31"},{"type":"REPORT","url":"https://redmine.openinfosecfoundation.org/issues/2969"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-17420"}],"affected":[{"package":{"name":"libhtp","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libhtp@0.5.15-1ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.5.15-1","0.5.15-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.5.15-1ubuntu0.1~esm1","binary_name":"libhtp1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-17420.json"}},{"package":{"name":"libhtp","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libhtp@1:0.5.26-1ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:0.5.25-1","1:0.5.26-1","1:0.5.26-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libhtp2","binary_version":"1:0.5.26-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-17420.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}