{"id":"USN-5819-1","summary":"haproxy vulnerability","details":"It was discovered that HAProxy incorrectly handled certain messages. A\nremote attacker could possibly use this issue to cause HAProxy to stop\nresponding, resulting in a denial of service.\n","modified":"2026-02-10T04:42:55Z","published":"2023-01-23T14:21:02Z","related":["UBUNTU-CVE-2023-0056"],"upstream":["CVE-2023-0056","UBUNTU-CVE-2023-0056"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5819-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-0056"}],"affected":[{"package":{"name":"haproxy","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/haproxy@2.0.29-0ubuntu1.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.29-0ubuntu1.1"}]}],"versions":["2.0.5-1","2.0.8-1","2.0.9-1","2.0.10-1","2.0.10-1ubuntu1","2.0.11-1ubuntu1","2.0.12-1ubuntu2","2.0.13-1ubuntu2","2.0.13-2","2.0.13-2ubuntu0.1","2.0.13-2ubuntu0.2","2.0.13-2ubuntu0.3","2.0.13-2ubuntu0.5","2.0.29-0ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"haproxy","binary_version":"2.0.29-0ubuntu1.1"},{"binary_name":"vim-haproxy","binary_version":"2.0.29-0ubuntu1.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5819-1.json","cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2023-0056"}],"ecosystem":"Ubuntu:20.04:LTS"}}},{"package":{"name":"haproxy","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/haproxy@2.4.18-0ubuntu1.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.18-0ubuntu1.1"}]}],"versions":["2.2.9-2ubuntu2","2.4.8-1","2.4.8-2ubuntu3","2.4.11-1ubuntu1","2.4.12-1ubuntu1","2.4.12-1ubuntu2","2.4.13-1ubuntu1","2.4.14-1ubuntu1","2.4.18-0ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"haproxy","binary_version":"2.4.18-0ubuntu1.1"},{"binary_name":"vim-haproxy","binary_version":"2.4.18-0ubuntu1.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5819-1.json","cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2023-0056"}],"ecosystem":"Ubuntu:22.04:LTS"}}}],"schema_version":"1.7.3"}