{"id":"USN-4854-1","summary":"python-asyncssh vulnerability","details":"Matthijs Kooijman discovered that AsyncSSH server did not properly handle\nauthentication under certain conditions. An attacker with a specially\ncrafted client could use this vulnerability to skip authentication of SSH\nsessions.","modified":"2026-02-10T04:42:06Z","published":"2021-03-15T22:40:45Z","related":["UBUNTU-CVE-2018-7749"],"upstream":["CVE-2018-7749","UBUNTU-CVE-2018-7749"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4854-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-7749"}],"affected":[{"package":{"name":"python-asyncssh","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/python-asyncssh@1.11.1-1ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.1-1ubuntu0.1~esm1"}]}],"versions":["1.8.1-2","1.11.0-2","1.11.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"python3-asyncssh","binary_version":"1.11.1-1ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2018-7749","severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:18.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4854-1.json"}}],"schema_version":"1.7.3"}