{"id":"UBUNTU-CVE-2019-20445","details":"HttpObjectDecoder.java in Netty before 4.1.44 allows a Content-Length header to be accompanied by a second Content-Length header, or by a Transfer-Encoding header.","modified":"2026-02-04T04:15:54.849090Z","published":"2020-01-29T21:15:00Z","related":["USN-4532-1","USN-4600-1","USN-4600-2"],"upstream":["CVE-2019-20445"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-20445"},{"type":"REPORT","url":"https://github.com/netty/netty/issues/9861"},{"type":"REPORT","url":"https://github.com/netty/netty/compare/netty-4.1.43.Final...netty-4.1.44.Final"},{"type":"REPORT","url":"https://lists.apache.org/thread.html/r70b1ff22ee80e8101805b9a473116dd33265709007d2deb6f8c80bf2@%3Ccommits.druid.apache.org%3E"},{"type":"REPORT","url":"https://lists.apache.org/thread.html/re45ee9256d3233c31d78e59ee59c7dc841c7fbd83d0769285b41e948@%3Ccommits.druid.apache.org%3E"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4532-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4600-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4600-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-20445"}],"affected":[{"package":{"name":"netty","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/netty@1:3.2.6.Final-2+deb8u2build0.14.04.1~esm1?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:3.2.6.Final-2+deb8u2build0.14.04.1~esm1"}]}],"versions":["1:3.2.6.Final-2"],"ecosystem_specific":{"binaries":[{"binary_name":"libnetty-java","binary_version":"1:3.2.6.Final-2+deb8u2build0.14.04.1~esm1"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-20445.json"}},{"package":{"name":"netty-3.9","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/netty-3.9@3.9.0.Final-1ubuntu0.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.9.0.Final-1ubuntu0.1"}]}],"versions":["3.9.0.Final-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libnetty-3.9-java","binary_version":"3.9.0.Final-1ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-20445.json"}},{"package":{"name":"netty","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/netty@1:4.0.34-1ubuntu0.1~esm3?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:3.2.6.Final-2","1:4.0.32-1","1:4.0.33-1","1:4.0.34-1","1:4.0.34-1ubuntu0.1~esm1","1:4.0.34-1ubuntu0.1~esm2","1:4.0.34-1ubuntu0.1~esm3"],"ecosystem_specific":{"binaries":[{"binary_name":"libnetty-java","binary_version":"1:4.0.34-1ubuntu0.1~esm3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-20445.json"}},{"package":{"name":"netty","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/netty@1:4.1.7-4ubuntu0.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.1.7-4ubuntu0.1"}]}],"versions":["1:4.1.7-4"],"ecosystem_specific":{"binaries":[{"binary_name":"libnetty-java","binary_version":"1:4.1.7-4ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-20445.json"}},{"package":{"name":"netty-3.9","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/netty-3.9@3.9.9.Final-1+deb9u1build0.18.04.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.9.9.Final-1+deb9u1build0.18.04.1"}]}],"versions":["3.9.9.Final-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libnetty-3.9-java","binary_version":"3.9.9.Final-1+deb9u1build0.18.04.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-20445.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}