{"id":"UBUNTU-CVE-2018-10933","details":"A vulnerability was found in libssh's server-side state machine before versions 0.7.6 and 0.8.4. A malicious client could create channels without first performing authentication, resulting in unauthorized access.","modified":"2026-04-22T11:41:31.122651Z","published":"2018-10-16T00:00:00Z","related":["USN-3795-1","USN-3795-2"],"upstream":["CVE-2018-10933"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-10933"},{"type":"REPORT","url":"https://www.libssh.org/2018/10/16/libssh-0-8-4-and-0-7-6-security-and-bugfix-release/"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3795-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3795-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-10933"}],"affected":[{"package":{"name":"libssh","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/libssh@0.6.1-0ubuntu3.4?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.1-0ubuntu3.4"}]}],"versions":["0.5.4-1","0.6.1-0ubuntu2","0.6.1-0ubuntu3","0.6.1-0ubuntu3.1","0.6.1-0ubuntu3.3"],"ecosystem_specific":{"binaries":[{"binary_version":"0.6.1-0ubuntu3.4","binary_name":"libssh-4"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-10933.json"}},{"package":{"name":"libssh","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/libssh@0.6.3-4.3ubuntu0.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.3-4.3ubuntu0.1"}]}],"versions":["0.6.3-3ubuntu3","0.6.3-4.1","0.6.3-4.2","0.6.3-4.2ubuntu1","0.6.3-4.3"],"ecosystem_specific":{"binaries":[{"binary_version":"0.6.3-4.3ubuntu0.1","binary_name":"libssh-4"},{"binary_version":"0.6.3-4.3ubuntu0.1","binary_name":"libssh-gcrypt-4"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-10933.json"}},{"package":{"name":"libssh","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/libssh@0.8.0~20170825.94fa1e38-1ubuntu0.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.8.0~20170825.94fa1e38-1ubuntu0.1"}]}],"versions":["0.7.5-1","0.8.0~20170825.94fa1e38-1","0.8.0~20170825.94fa1e38-1build1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.8.0~20170825.94fa1e38-1ubuntu0.1","binary_name":"libssh-4"},{"binary_version":"0.8.0~20170825.94fa1e38-1ubuntu0.1","binary_name":"libssh-gcrypt-4"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-10933.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}