{"id":"UBUNTU-CVE-2023-46445","details":"An issue in AsyncSSH before 2.14.1 allows attackers to control the extension info message (RFC 8308) via a man-in-the-middle attack, aka a \"Rogue Extension Negotiation.\"","modified":"2026-02-28T05:43:42.334455Z","published":"2023-11-14T03:15:00Z","related":["USN-7108-1","USN-7108-2"],"upstream":["CVE-2023-46445"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-46445"},{"type":"REPORT","url":"https://github.com/ronf/asyncssh/security/advisories/GHSA-cfc2-wr2v-gxm5"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-46445"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7108-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7108-2"}],"affected":[{"package":{"name":"python-asyncssh","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/python-asyncssh@1.3.0-1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.0-1","1.2.1-1","1.3.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"python3-asyncssh","binary_version":"1.3.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-46445.json"}},{"package":{"name":"python-asyncssh","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/python-asyncssh@1.11.1-1ubuntu0.1~esm2?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.1-1ubuntu0.1~esm2"}]}],"versions":["1.8.1-2","1.11.0-2","1.11.1-1","1.11.1-1ubuntu0.1~esm1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"1.11.1-1ubuntu0.1~esm2","binary_name":"python3-asyncssh"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-46445.json"}},{"package":{"name":"python-asyncssh","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/python-asyncssh@1.12.2-1ubuntu0.2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.12.2-1ubuntu0.2"}]}],"versions":["1.12.2-1","1.12.2-1ubuntu0.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"python3-asyncssh","binary_version":"1.12.2-1ubuntu0.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-46445.json"}},{"package":{"name":"python-asyncssh","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/python-asyncssh@2.5.0-1ubuntu0.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.0-1ubuntu0.1"}]}],"versions":["2.5.0-1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"python3-asyncssh","binary_version":"2.5.0-1ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-46445.json"}},{"package":{"name":"python-asyncssh","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/python-asyncssh@2.10.1-2ubuntu0.1+esm1?arch=source&distro=esm-apps/noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.10.1-2ubuntu0.1+esm1"}]}],"versions":["2.10.1-2","2.10.1-2ubuntu0.1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"python3-asyncssh","binary_version":"2.10.1-2ubuntu0.1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-46445.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}