{"id":"UBUNTU-CVE-2021-39272","details":"Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a certain situation with IMAP and PREAUTH.","modified":"2025-10-24T04:50:29Z","published":"2021-08-30T06:15:00Z","upstream":["CVE-2021-39272"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-39272"},{"type":"REPORT","url":"https://www.fetchmail.info/fetchmail-SA-2021-02.txt"},{"type":"REPORT","url":"https://www.openwall.com/lists/oss-security/2021/08/27/3"},{"type":"REPORT","url":"https://nostarttls.secvuln.info/"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-39272"}],"affected":[{"package":{"name":"fetchmail","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/fetchmail@6.3.26-2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.3.26-1","6.3.26-2"],"ecosystem_specific":{"binaries":[{"binary_version":"6.3.26-2","binary_name":"fetchmail"},{"binary_name":"fetchmailconf","binary_version":"6.3.26-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-39272.json"}},{"package":{"name":"fetchmail","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/fetchmail@6.3.26-3ubuntu0.1~18.04.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.3.26-3","6.3.26-3build1","6.3.26-3ubuntu0.1~18.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"6.3.26-3ubuntu0.1~18.04.1","binary_name":"fetchmail"},{"binary_name":"fetchmailconf","binary_version":"6.3.26-3ubuntu0.1~18.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-39272.json"}},{"package":{"name":"fetchmail","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/fetchmail@6.4.2-2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.4.0~rc4-1ubuntu1","6.4.1-1ubuntu1","6.4.2-2"],"ecosystem_specific":{"binaries":[{"binary_name":"fetchmail","binary_version":"6.4.2-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-39272.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:H/I:N/A:N"},{"type":"Ubuntu","score":"low"}]}