{"id":"UBUNTU-CVE-2026-101014","details":"A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_util_cleanup in the library libopendmarc/opendmarc_util.c of the component DMARC Record Parser. Performing a manipulation results in off-by-one. The attack may be initiated remotely. The exploit is now public and may be used. The patch is named b3b1da9264bc80324094a27c71e7369bdedc62ae. To fix this issue, it is recommended to deploy a patch.","modified":"2026-09-29T23:41:42.050503724Z","published":"2026-09-29T00:00:00Z","upstream":["CVE-2026-101014"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-101014"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-101014"},{"type":"REPORT","url":"https://github.com/trusteddomainproject/OpenDMARC/pull/188"},{"type":"REPORT","url":"https://github.com/trusteddomainproject/OpenDMARC/pull/344"},{"type":"REPORT","url":"https://github.com/trusteddomainproject/OpenDMARC/commit/b3b1da9264bc80324094a27c71e7369bdedc62ae"},{"type":"REPORT","url":"https://vuldb.com/cve/CVE-2026-101014"},{"type":"REPORT","url":"https://vuldb.com/submit/917100"},{"type":"REPORT","url":"https://vuldb.com/vuln/410884"},{"type":"REPORT","url":"https://vuldb.com/vuln/410884/cti"},{"type":"REPORT","url":"https://weitongli.com/share/opendmarc-cleanup-off-by-one.html"}],"affected":[{"package":{"name":"opendmarc","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/opendmarc?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.1+dfsg-2","1.3.1+dfsg-3","1.3.1+dfsg-3ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libopendmarc2","binary_version":"1.3.1+dfsg-3ubuntu0.1~esm1"},{"binary_name":"opendmarc","binary_version":"1.3.1+dfsg-3ubuntu0.1~esm1"},{"binary_version":"1.3.1+dfsg-3ubuntu0.1~esm1","binary_name":"rddmarc"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101014.json"}},{"package":{"name":"opendmarc","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/opendmarc?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.2-2","1.3.2-3","1.3.2-3ubuntu0.1","1.3.2-3ubuntu0.2"],"ecosystem_specific":{"binaries":[{"binary_name":"libopendmarc2","binary_version":"1.3.2-3ubuntu0.2"},{"binary_name":"opendmarc","binary_version":"1.3.2-3ubuntu0.2"},{"binary_name":"rddmarc","binary_version":"1.3.2-3ubuntu0.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101014.json"}},{"package":{"name":"opendmarc","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/opendmarc?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.2-6","1.3.2-7","1.3.2-7ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libopendmarc2","binary_version":"1.3.2-7ubuntu0.1"},{"binary_version":"1.3.2-7ubuntu0.1","binary_name":"opendmarc"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101014.json"}},{"package":{"name":"opendmarc","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/opendmarc?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.0~beta1+dfsg-6","1.4.1.1-1","1.4.1.1-2","1.4.2-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.4.2-1","binary_name":"libopendmarc2"},{"binary_version":"1.4.2-1","binary_name":"opendmarc"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101014.json"}},{"package":{"name":"opendmarc","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/opendmarc?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.2-3","1.4.2-4","1.4.2-4.1build1","1.4.2-4.1build2"],"ecosystem_specific":{"binaries":[{"binary_name":"libopendmarc2t64","binary_version":"1.4.2-4.1build2"},{"binary_name":"opendmarc","binary_version":"1.4.2-4.1build2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101014.json"}},{"package":{"name":"opendmarc","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/opendmarc?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.2-5.1","1.4.2-5.1build1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.4.2-5.1build1","binary_name":"libopendmarc2t64"},{"binary_name":"opendmarc","binary_version":"1.4.2-5.1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101014.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"},{"type":"Ubuntu","score":"medium"}]}