{"id":"USN-4327-1","summary":"libssh vulnerability","details":"Yasheng Yang discovered that libssh incorrectly handled AES-CTR ciphers. A\nremote attacker could possibly use this issue to cause libssh to crash,\nresulting in a denial of service.\n","modified":"2026-02-10T04:41:48Z","published":"2020-04-09T12:11:24Z","related":["UBUNTU-CVE-2020-1730"],"upstream":["CVE-2020-1730","UBUNTU-CVE-2020-1730"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4327-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-1730"}],"affected":[{"package":{"name":"libssh","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/libssh@0.8.0~20170825.94fa1e38-1ubuntu0.6?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.8.0~20170825.94fa1e38-1ubuntu0.6"}]}],"versions":["0.7.5-1","0.8.0~20170825.94fa1e38-1","0.8.0~20170825.94fa1e38-1build1","0.8.0~20170825.94fa1e38-1ubuntu0.1","0.8.0~20170825.94fa1e38-1ubuntu0.2","0.8.0~20170825.94fa1e38-1ubuntu0.5"],"ecosystem_specific":{"binaries":[{"binary_version":"0.8.0~20170825.94fa1e38-1ubuntu0.6","binary_name":"libssh-4"},{"binary_version":"0.8.0~20170825.94fa1e38-1ubuntu0.6","binary_name":"libssh-dev"},{"binary_version":"0.8.0~20170825.94fa1e38-1ubuntu0.6","binary_name":"libssh-gcrypt-4"},{"binary_version":"0.8.0~20170825.94fa1e38-1ubuntu0.6","binary_name":"libssh-gcrypt-dev"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4327-1.json","cves_map":{"cves":[{"id":"CVE-2020-1730","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:18.04:LTS"}}}],"schema_version":"1.7.3"}