{"id":"UBUNTU-CVE-2020-35766","details":"The test suite in libopendkim in OpenDKIM through 2.10.3 allows local users to gain privileges via a symlink attack against the /tmp/testkeys file (related to t-testdata.h, t-setup.c, and t-cleanup.c). NOTE: this is applicable to persons who choose to engage in the \"A number of self-test programs are included here for unit-testing the library\" situation.","modified":"2026-05-20T16:06:23.859223119Z","published":"2020-12-28T20:15:00Z","upstream":["CVE-2020-35766"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-35766"},{"type":"REPORT","url":"https://github.com/trusteddomainproject/OpenDKIM/issues/113"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-35766"}],"affected":[{"package":{"name":"opendkim","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/opendkim?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.3-3build1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.10.3-3build1","binary_name":"libopendkim10"},{"binary_name":"librbl1","binary_version":"2.10.3-3build1"},{"binary_name":"libvbr2","binary_version":"2.10.3-3build1"},{"binary_version":"2.10.3-3build1","binary_name":"opendkim"},{"binary_name":"opendkim-tools","binary_version":"2.10.3-3build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-35766.json"}},{"package":{"name":"opendkim","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/opendkim?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.11.0~alpha-10","2.11.0~alpha-11","2.11.0~alpha-11build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libopendkim11","binary_version":"2.11.0~alpha-11build1"},{"binary_version":"2.11.0~alpha-11build1","binary_name":"librbl1"},{"binary_version":"2.11.0~alpha-11build1","binary_name":"libvbr2"},{"binary_version":"2.11.0~alpha-11build1","binary_name":"opendkim"},{"binary_version":"2.11.0~alpha-11build1","binary_name":"opendkim-tools"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-35766.json"}},{"package":{"name":"opendkim","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/opendkim?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.11.0~alpha-12","2.11.0~alpha-13","2.11.0~alpha-14","2.11.0~beta2-1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.11.0~beta2-1","binary_name":"libopendkim11"},{"binary_name":"librbl1","binary_version":"2.11.0~beta2-1"},{"binary_name":"libvbr2","binary_version":"2.11.0~beta2-1"},{"binary_name":"opendkim","binary_version":"2.11.0~beta2-1"},{"binary_name":"opendkim-tools","binary_version":"2.11.0~beta2-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-35766.json"}},{"package":{"name":"opendkim","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/opendkim?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.11.0~beta2-4build1","2.11.0~beta2-5","2.11.0~beta2-6"],"ecosystem_specific":{"binaries":[{"binary_name":"libopendkim11","binary_version":"2.11.0~beta2-6"},{"binary_name":"librbl1","binary_version":"2.11.0~beta2-6"},{"binary_name":"libvbr2","binary_version":"2.11.0~beta2-6"},{"binary_version":"2.11.0~beta2-6","binary_name":"miltertest"},{"binary_name":"opendkim","binary_version":"2.11.0~beta2-6"},{"binary_name":"opendkim-tools","binary_version":"2.11.0~beta2-6"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-35766.json"}},{"package":{"name":"opendkim","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/opendkim?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.11.0~beta2-8","2.11.0~beta2-9","2.11.0~beta2-9build3","2.11.0~beta2-9build4"],"ecosystem_specific":{"binaries":[{"binary_name":"libopendkim11","binary_version":"2.11.0~beta2-9build4"},{"binary_name":"librbl1","binary_version":"2.11.0~beta2-9build4"},{"binary_name":"libvbr2","binary_version":"2.11.0~beta2-9build4"},{"binary_name":"miltertest","binary_version":"2.11.0~beta2-9build4"},{"binary_version":"2.11.0~beta2-9build4","binary_name":"opendkim"},{"binary_name":"opendkim-tools","binary_version":"2.11.0~beta2-9build4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-35766.json"}},{"package":{"name":"opendkim","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/opendkim?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.11.0~beta2-9.1","2.11.0~beta2-9.2"],"ecosystem_specific":{"binaries":[{"binary_name":"libopendkim11","binary_version":"2.11.0~beta2-9.2"},{"binary_version":"2.11.0~beta2-9.2","binary_name":"librbl1"},{"binary_name":"libvbr2","binary_version":"2.11.0~beta2-9.2"},{"binary_name":"miltertest","binary_version":"2.11.0~beta2-9.2"},{"binary_version":"2.11.0~beta2-9.2","binary_name":"opendkim"},{"binary_name":"opendkim-tools","binary_version":"2.11.0~beta2-9.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-secur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