{"id":"USN-6411-1","summary":"exim4 vulnerabilities","details":"It was discovered that Exim incorrectly handled certain challenge requests.\nA remote attacker could possibly use this issue to perform out-of-bounds\nreads, resulting in information leakage. (CVE-2023-42114)\n\nIt was discovered that Exim incorrectly handled validation of user-supplied\ndata. A remote attacker could possibly use this issue to perform\nout-of-bounds writes, resulting in arbitrary code execution. This issue\nonly affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 23.04.\n(CVE-2023-42115)\n\nIt was discovered that Exim incorrectly handled certain challenge requests.\nA remote attacker could possibly use this issue to perform out-of-bounds\nwrites, resulting in arbitrary code execution. (CVE-2023-42116)\n","modified":"2026-04-22T10:39:54.372799Z","published":"2023-10-04T13:41:19Z","related":["UBUNTU-CVE-2023-42114","UBUNTU-CVE-2023-42115","UBUNTU-CVE-2023-42116"],"upstream":["CVE-2023-42114","CVE-2023-42115","CVE-2023-42116","UBUNTU-CVE-2023-42114","UBUNTU-CVE-2023-42115","UBUNTU-CVE-2023-42116"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6411-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-42114"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-42115"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-42116"}],"affected":[{"package":{"name":"exim4","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/exim4@4.82-3ubuntu2.4+esm6?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.82-3ubuntu2.4+esm6"}]}],"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","4.82-3ubuntu2.4+esm2","4.82-3ubuntu2.4+esm3","4.82-3ubuntu2.4+esm4"],"ecosystem_specific":{"binaries":[{"binary_name":"exim4","binary_version":"4.82-3ubuntu2.4+esm6"},{"binary_name":"exim4-base","binary_version":"4.82-3ubuntu2.4+esm6"},{"binary_name":"exim4-config","binary_version":"4.82-3ubuntu2.4+esm6"},{"binary_name":"exim4-daemon-heavy","binary_version":"4.82-3ubuntu2.4+esm6"},{"binary_name":"exim4-daemon-light","binary_version":"4.82-3ubuntu2.4+esm6"},{"binary_name":"eximon4","binary_version":"4.82-3ubuntu2.4+esm6"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6411-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:14.04:LTS","cves":[{"id":"CVE-2023-42114","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2023-42116","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]}}},{"package":{"name":"exim4","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/exim4@4.86.2-2ubuntu2.6+esm4?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.86.2-2ubuntu2.6+esm4"}]}],"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","4.86.2-2ubuntu2.6","4.86.2-2ubuntu2.6+esm1","4.86.2-2ubuntu2.6+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"exim4","binary_version":"4.86.2-2ubuntu2.6+esm4"},{"binary_name":"exim4-base","binary_version":"4.86.2-2ubuntu2.6+esm4"},{"binary_name":"exim4-config","binary_version":"4.86.2-2ubuntu2.6+esm4"},{"binary_name":"exim4-daemon-heavy","binary_version":"4.86.2-2ubuntu2.6+esm4"},{"binary_name":"exim4-daemon-light","binary_version":"4.86.2-2ubuntu2.6+esm4"},{"binary_name":"eximon4","binary_version":"4.86.2-2ubuntu2.6+esm4"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6411-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"id":"CVE-2023-42114","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2023-42116","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]}}},{"package":{"name":"exim4","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/exim4@4.90.1-1ubuntu1.10+esm1?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.90.1-1ubuntu1.10+esm1"}]}],"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","4.90.1-1ubuntu1.5","4.90.1-1ubuntu1.8","4.90.1-1ubuntu1.9","4.90.1-1ubuntu1.10"],"ecosystem_specific":{"binaries":[{"binary_name":"exim4","binary_version":"4.90.1-1ubuntu1.10+esm1"},{"binary_name":"exim4-base","binary_version":"4.90.1-1ubuntu1.10+esm1"},{"binary_name":"exim4-config","binary_version":"4.90.1-1ubuntu1.10+esm1"},{"binary_name":"exim4-daemon-heavy","binary_version":"4.90.1-1ubuntu1.10+esm1"},{"binary_name":"exim4-daemon-light","binary_version":"4.90.1-1ubuntu1.10+esm1"},{"binary_name":"eximon4","binary_version":"4.90.1-1ubuntu1.10+esm1"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6411-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[{"id":"CVE-2023-42114","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2023-42116","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]}}},{"package":{"name":"exim4","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/exim4@4.93-13ubuntu1.8?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.93-13ubuntu1.8"}]}],"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","4.93-13ubuntu1.1","4.93-13ubuntu1.5","4.93-13ubuntu1.6","4.93-13ubuntu1.7"],"ecosystem_specific":{"binaries":[{"binary_name":"exim4","binary_version":"4.93-13ubuntu1.8"},{"binary_name":"exim4-base","binary_version":"4.93-13ubuntu1.8"},{"binary_name":"exim4-config","binary_version":"4.93-13ubuntu1.8"},{"binary_name":"exim4-daemon-heavy","binary_version":"4.93-13ubuntu1.8"},{"binary_name":"exim4-daemon-light","binary_version":"4.93-13ubuntu1.8"},{"binary_name":"eximon4","binary_version":"4.93-13ubuntu1.8"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6411-1.json","cves_map":{"ecosystem":"Ubuntu:20.04:LTS","cves":[{"id":"CVE-2023-42114","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2023-42115","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2023-42116","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]}}},{"package":{"name":"exim4","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/exim4@4.95-4ubuntu2.3?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.95-4ubuntu2.3"}]}],"versions":["4.94.2-7ubuntu2","4.95-2ubuntu2","4.95-4ubuntu1","4.95-4ubuntu2","4.95-4ubuntu2.1","4.95-4ubuntu2.2"],"ecosystem_specific":{"binaries":[{"binary_name":"exim4","binary_version":"4.95-4ubuntu2.3"},{"binary_name":"exim4-base","binary_version":"4.95-4ubuntu2.3"},{"binary_name":"exim4-config","binary_version":"4.95-4ubuntu2.3"},{"binary_name":"exim4-daemon-heavy","binary_version":"4.95-4ubuntu2.3"},{"binary_name":"exim4-daemon-light","binary_version":"4.95-4ubuntu2.3"},{"binary_name":"eximon4","binary_version":"4.95-4ubuntu2.3"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6411-1.json","cves_map":{"ecosystem":"Ubuntu:22.04:LTS","cves":[{"id":"CVE-2023-42114","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2023-42115","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2023-42116","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]}}}],"schema_version":"1.7.5"}