{"id":"USN-4294-1","summary":"OpenSMTPD vulnerabilities","details":"It was discovered that OpenSMTPD mishandled certain input. A remote,\nunauthenticated attacker could use this vulnerability to execute arbitrary\nshell commands as any non-root user. (CVE-2020-8794)\n\nIt was discovered that OpenSMTPD did not properly handle hardlinks under\ncertain conditions. An unprivileged local attacker could read the first\nline of any file on the filesystem. (CVE-2020-8793)\n","modified":"2026-02-10T04:41:47Z","published":"2020-03-02T18:17:27Z","related":["UBUNTU-CVE-2020-8793","UBUNTU-CVE-2020-8794"],"upstream":["CVE-2020-8793","CVE-2020-8794","UBUNTU-CVE-2020-8793","UBUNTU-CVE-2020-8794"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4294-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-8793"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-8794"}],"affected":[{"package":{"name":"opensmtpd","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/opensmtpd@6.0.3p1-1ubuntu0.2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.3p1-1ubuntu0.2"}]}],"versions":["6.0.2p1-2build1","6.0.3p1-1","6.0.3p1-1build1","6.0.3p1-1ubuntu0.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"6.0.3p1-1ubuntu0.2","binary_name":"opensmtpd"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:18.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2020-8793"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}],"id":"CVE-2020-8794"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4294-1.json"}}],"schema_version":"1.7.3"}