{"id":"USN-4174-1","summary":"haproxy vulnerability","details":"It was discovered that HAproxy incorrectly handled certain HTTP requests.\nAn attacker could possibly use this issue to a privilege escalation\n(Request Smuggling).\n","modified":"2026-02-10T04:41:40Z","published":"2019-11-05T12:50:26Z","related":["UBUNTU-CVE-2019-18277"],"upstream":["CVE-2019-18277","UBUNTU-CVE-2019-18277"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4174-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-18277"}],"affected":[{"package":{"name":"haproxy","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/haproxy@1.6.3-1ubuntu0.3?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.3-1ubuntu0.3"}]}],"versions":["1.5.14-1","1.5.15-1","1.6.2-1","1.6.2-2","1.6.2-2ubuntu1","1.6.2-2ubuntu3","1.6.3-1","1.6.3-1ubuntu0.1","1.6.3-1ubuntu0.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"haproxy","binary_version":"1.6.3-1ubuntu0.3"},{"binary_name":"vim-haproxy","binary_version":"1.6.3-1ubuntu0.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4174-1.json","cves_map":{"cves":[{"id":"CVE-2019-18277","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:16.04:LTS"}}},{"package":{"name":"haproxy","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/haproxy@1.8.8-1ubuntu0.7?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.8-1ubuntu0.7"}]}],"versions":["1.7.9-1ubuntu1","1.7.9-1ubuntu2","1.8.4-1","1.8.7-1","1.8.8-1","1.8.8-1ubuntu0.1","1.8.8-1ubuntu0.2","1.8.8-1ubuntu0.3","1.8.8-1ubuntu0.4","1.8.8-1ubuntu0.6"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"haproxy","binary_version":"1.8.8-1ubuntu0.7"},{"binary_name":"vim-haproxy","binary_version":"1.8.8-1ubuntu0.7"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4174-1.json","cves_map":{"cves":[{"id":"CVE-2019-18277","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:18.04:LTS"}}}],"schema_version":"1.7.3"}