{"id":"UBUNTU-CVE-2022-37452","details":"Exim before 4.95 has a heap-based buffer overflow for the alias list in host_name_lookup in host.c when sender_host_name is set.","modified":"2026-04-22T15:38:46.201402Z","published":"2022-08-07T18:15:00Z","related":["USN-5574-1"],"upstream":["CVE-2022-37452"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-37452"},{"type":"REPORT","url":"https://www.openwall.com/lists/oss-security/2022/08/06/8"},{"type":"REPORT","url":"https://github.com/ivd38/exim_overflow"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5574-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2022-37452"}],"affected":[{"package":{"name":"exim4","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/exim4@4.82-3ubuntu2.4+esm4?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.82-3ubuntu2.4+esm4"}]}],"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"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): 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with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"exim4","binary_version":"4.86.2-2ubuntu2.6+esm2"},{"binary_name":"exim4-base","binary_version":"4.86.2-2ubuntu2.6+esm2"},{"binary_name":"exim4-config","binary_version":"4.86.2-2ubuntu2.6+esm2"},{"binary_name":"exim4-daemon-heavy","binary_version":"4.86.2-2ubuntu2.6+esm2"},{"binary_name":"exim4-daemon-light","binary_version":"4.86.2-2ubuntu2.6+esm2"},{"binary_name":"eximon4","binary_version":"4.86.2-2ubuntu2.6+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-37452.json"}},{"package":{"name":"exim4","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/exim4@4.90.1-1ubuntu1.9?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.90.1-1ubuntu1.9"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"exim4","binary_version":"4.90.1-1ubuntu1.9"},{"binary_name":"exim4-base","binary_version":"4.90.1-1ubuntu1.9"},{"binary_name":"exim4-config","binary_version":"4.90.1-1ubuntu1.9"},{"binary_name":"exim4-daemon-heavy","binary_version":"4.90.1-1ubuntu1.9"},{"binary_name":"exim4-daemon-light","binary_version":"4.90.1-1ubuntu1.9"},{"binary_name":"eximon4","binary_version":"4.90.1-1ubuntu1.9"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-37452.json"}},{"package":{"name":"exim4","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/exim4@4.93-13ubuntu1.6?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.93-13ubuntu1.6"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"exim4","binary_version":"4.93-13ubuntu1.6"},{"binary_name":"exim4-base","binary_version":"4.93-13ubuntu1.6"},{"binary_name":"exim4-config","binary_version":"4.93-13ubuntu1.6"},{"binary_name":"exim4-daemon-heavy","binary_version":"4.93-13ubuntu1.6"},{"binary_name":"exim4-daemon-light","binary_version":"4.93-13ubuntu1.6"},{"binary_name":"eximon4","binary_version":"4.93-13ubuntu1.6"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-37452.json"}}],"schema_version":"1.7.5","severity":[{"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"}]}