{"id":"USN-4366-1","summary":"exim4 vulnerability","details":"It was discovered that Exim incorrectly handled certain inputs.\nAn remote attacker could possibly use this issue to access sensitive\ninformation or authentication bypass.\n","modified":"2026-06-29T13:47:59.272873171Z","published":"2020-05-19T12:55:02Z","related":["UBUNTU-CVE-2020-12783"],"upstream":["CVE-2020-12783","UBUNTU-CVE-2020-12783"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4366-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-12783"}],"affected":[{"package":{"name":"exim4","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/exim4?arch=source&distro=trusty%2Fesm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.82-3ubuntu2.4+esm2"}]}],"versions":["4.80-7ubuntu3","4.80-7ubuntu4","4.80-9ubuntu1","4.80-9ubuntu2","4.82-3ubuntu1","4.82-3ubuntu2","4.82-3ubuntu2.1","4.82-3ubuntu2.2","4.82-3ubuntu2.3","4.82-3ubuntu2.4","4.82-3ubuntu2.4+esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"4.82-3ubuntu2.4+esm2","binary_name":"exim4"},{"binary_name":"exim4-base","binary_version":"4.82-3ubuntu2.4+esm2"},{"binary_name":"exim4-config","binary_version":"4.82-3ubuntu2.4+esm2"},{"binary_version":"4.82-3ubuntu2.4+esm2","binary_name":"exim4-daemon-heavy"},{"binary_name":"exim4-daemon-light","binary_version":"4.82-3ubuntu2.4+esm2"},{"binary_name":"eximon4","binary_version":"4.82-3ubuntu2.4+esm2"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:14.04:LTS","cves":[{"id":"CVE-2020-12783","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4366-1.json"}},{"package":{"name":"exim4","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/exim4?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.86.2-2ubuntu2.6"}]}],"versions":["4.86-3ubuntu1","4.86-7ubuntu1","4.86-7ubuntu2","4.86-7ubuntu3","4.86.2-2ubuntu1","4.86.2-2ubuntu2","4.86.2-2ubuntu2.1","4.86.2-2ubuntu2.2","4.86.2-2ubuntu2.3","4.86.2-2ubuntu2.4","4.86.2-2ubuntu2.5"],"ecosystem_specific":{"binaries":[{"binary_name":"exim4","binary_version":"4.86.2-2ubuntu2.6"},{"binary_name":"exim4-base","binary_version":"4.86.2-2ubuntu2.6"},{"binary_name":"exim4-config","binary_version":"4.86.2-2ubuntu2.6"},{"binary_version":"4.86.2-2ubuntu2.6","binary_name":"exim4-daemon-heavy"},{"binary_name":"exim4-daemon-light","binary_version":"4.86.2-2ubuntu2.6"},{"binary_name":"eximon4","binary_version":"4.86.2-2ubuntu2.6"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2020-12783","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:16.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4366-1.json"}},{"package":{"name":"exim4","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/exim4?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.90.1-1ubuntu1.5"}]}],"versions":["4.89-5ubuntu1","4.89-9ubuntu1","4.89-9ubuntu2","4.89-9ubuntu3","4.89-9ubuntu4","4.90.1-1ubuntu1","4.90.1-1ubuntu1.1","4.90.1-1ubuntu1.2","4.90.1-1ubuntu1.3","4.90.1-1ubuntu1.4"],"ecosystem_specific":{"binaries":[{"binary_name":"exim4","binary_version":"4.90.1-1ubuntu1.5"},{"binary_name":"exim4-base","binary_version":"4.90.1-1ubuntu1.5"},{"binary_version":"4.90.1-1ubuntu1.5","binary_name":"exim4-config"},{"binary_version":"4.90.1-1ubuntu1.5","binary_name":"exim4-daemon-heavy"},{"binary_name":"exim4-daemon-light","binary_version":"4.90.1-1ubuntu1.5"},{"binary_name":"eximon4","binary_version":"4.90.1-1ubuntu1.5"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2020-12783","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:18.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4366-1.json"}},{"package":{"name":"exim4","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/exim4?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.93-13ubuntu1.1"}]}],"versions":["4.92.1-1ubuntu3","4.92.1-1ubuntu4","4.93~RC2-1ubuntu1","4.93-9ubuntu1","4.93-11ubuntu1","4.93-12ubuntu1","4.93-13ubuntu1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"exim4","binary_version":"4.93-13ubuntu1.1"},{"binary_name":"exim4-base","binary_version":"4.93-13ubuntu1.1"},{"binary_version":"4.93-13ubuntu1.1","binary_name":"exim4-config"},{"binary_name":"exim4-daemon-heavy","binary_version":"4.93-13ubuntu1.1"},{"binary_name":"exim4-daemon-light","binary_version":"4.93-13ubuntu1.1"},{"binary_name":"eximon4","binary_version":"4.93-13ubuntu1.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4366-1.json","cves_map":{"ecosystem":"Ubuntu:20.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2020-12783"}]}}}],"schema_version":"1.7.5"}