{"id":"UBUNTU-CVE-2018-17189","details":"In Apache HTTP server versions 2.4.37 and prior, by sending request bodies in a slow loris way to plain resources, the h2 stream for that request unnecessarily occupied a server thread cleaning up that incoming data. This affects only HTTP/2 (mod_http2) connections.","modified":"2026-04-22T12:57:36.902078Z","published":"2019-01-30T00:00:00Z","related":["USN-3937-1"],"upstream":["CVE-2018-17189"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-17189"},{"type":"REPORT","url":"https://www.openwall.com/lists/oss-security/2019/01/22/2"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3937-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-17189"}],"affected":[{"package":{"name":"apache2","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/apache2@2.4.29-1ubuntu4.6?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.29-1ubuntu4.6"}]}],"versions":["2.4.27-2ubuntu3","2.4.29-1ubuntu1","2.4.29-1ubuntu2","2.4.29-1ubuntu3","2.4.29-1ubuntu4","2.4.29-1ubuntu4.1","2.4.29-1ubuntu4.2","2.4.29-1ubuntu4.3","2.4.29-1ubuntu4.4","2.4.29-1ubuntu4.5"],"ecosystem_specific":{"binaries":[{"binary_version":"2.4.29-1ubuntu4.6","binary_name":"apache2"},{"binary_version":"2.4.29-1ubuntu4.6","binary_name":"apache2-bin"},{"binary_version":"2.4.29-1ubuntu4.6","binary_name":"apache2-data"},{"binary_version":"2.4.29-1ubuntu4.6","binary_name":"apache2-suexec-custom"},{"binary_version":"2.4.29-1ubuntu4.6","binary_name":"apache2-suexec-pristine"},{"binary_version":"2.4.29-1ubuntu4.6","binary_name":"apache2-utils"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-17189.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:N/A:L"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"low"}]}