{"id":"USN-5354-2","summary":"twisted vulnerability","details":"USN-5354-1 fixed vulnerabilities in Twisted. This update provides the \ncorresponding updates for Ubuntu 14.04 ESM, Ubuntu 16.04 ESM and\nUbuntu 22.04 LTS.\n\nOriginal advisory details:\n \n It was discovered that Twisted incorrectly processed SSH handshake data on \n connection establishments. A remote attacker could use this issue to cause \n Twisted to crash, resulting in a denial of service. (CVE-2022-21716)\n","modified":"2026-02-10T04:42:33Z","published":"2022-05-05T08:14:06Z","related":["UBUNTU-CVE-2022-21716"],"upstream":["CVE-2022-21716","UBUNTU-CVE-2022-21716"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5354-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-21716"}],"affected":[{"package":{"name":"twisted","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/twisted@13.2.0-1ubuntu1.2+esm2?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"13.2.0-1ubuntu1.2+esm2"}]}],"versions":["13.0.0-1ubuntu1","13.2.0-1ubuntu1","13.2.0-1ubuntu1.2","13.2.0-1ubuntu1.2+esm1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_version":"13.2.0-1ubuntu1.2+esm2","binary_name":"python-twisted"},{"binary_version":"13.2.0-1ubuntu1.2+esm2","binary_name":"python-twisted-bin"},{"binary_version":"1:13.2.0-1ubuntu1.2+esm2","binary_name":"python-twisted-conch"},{"binary_version":"13.2.0-1ubuntu1.2+esm2","binary_name":"python-twisted-core"},{"binary_version":"13.2.0-1ubuntu1.2+esm2","binary_name":"python-twisted-lore"},{"binary_version":"13.2.0-1ubuntu1.2+esm2","binary_name":"python-twisted-mail"},{"binary_version":"13.2.0-1ubuntu1.2+esm2","binary_name":"python-twisted-names"},{"binary_version":"13.2.0-1ubuntu1.2+esm2","binary_name":"python-twisted-news"},{"binary_version":"13.2.0-1ubuntu1.2+esm2","binary_name":"python-twisted-runner"},{"binary_version":"13.2.0-1ubuntu1.2+esm2","binary_name":"python-twisted-web"},{"binary_version":"13.2.0-1ubuntu1.2+esm2","binary_name":"python-twisted-words"}]},"database_specific":{"cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2022-21716"}],"ecosystem":"Ubuntu:Pro:14.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5354-2.json"}},{"package":{"name":"twisted","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/twisted@16.0.0-1ubuntu0.4+esm1?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"16.0.0-1ubuntu0.4+esm1"}]}],"versions":["15.2.1-1ubuntu2","15.5.0-1","15.5.0-2","15.5.0-2ubuntu1","15.5.0-4","16.0.0~pre1-1","16.0.0~pre1-1ubuntu1","16.0.0~pre1-2ubuntu1","16.0.0~pre1-3","16.0.0-1","16.0.0-1ubuntu0.2","16.0.0-1ubuntu0.4"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_version":"16.0.0-1ubuntu0.4+esm1","binary_name":"python-twisted"},{"binary_version":"16.0.0-1ubuntu0.4+esm1","binary_name":"python-twisted-bin"},{"binary_version":"1:16.0.0-1ubuntu0.4+esm1","binary_name":"python-twisted-conch"},{"binary_version":"16.0.0-1ubuntu0.4+esm1","binary_name":"python-twisted-core"},{"binary_version":"16.0.0-1ubuntu0.4+esm1","binary_name":"python-twisted-mail"},{"binary_version":"16.0.0-1ubuntu0.4+esm1","binary_name":"python-twisted-names"},{"binary_version":"16.0.0-1ubuntu0.4+esm1","binary_name":"python-twisted-news"},{"binary_version":"16.0.0-1ubuntu0.4+esm1","binary_name":"python-twisted-runner"},{"binary_version":"16.0.0-1ubuntu0.4+esm1","binary_name":"python-twisted-web"},{"binary_version":"16.0.0-1ubuntu0.4+esm1","binary_name":"python-twisted-words"},{"binary_version":"16.0.0-1ubuntu0.4+esm1","binary_name":"python3-twisted"}]},"database_specific":{"cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2022-21716"}],"ecosystem":"Ubuntu:Pro:16.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5354-2.json"}},{"package":{"name":"twisted","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/twisted@22.1.0-2ubuntu2.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"22.1.0-2ubuntu2.1"}]}],"versions":["20.3.0-7ubuntu1","20.3.0-7ubuntu3","22.1.0-2ubuntu2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"22.1.0-2ubuntu2.1","binary_name":"python3-twisted"}]},"database_specific":{"cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2022-21716"}],"ecosystem":"Ubuntu:22.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5354-2.json"}}],"schema_version":"1.7.3"}