{"affected":[{"affectedData":[{"product":"mod_auth_mellon","vendor":"uninett","versions":[{"status":"affected","version":"before v0.14.2"}]}],"source":"secalert@redhat.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:mod_auth_mellon_project:mod_auth_mellon:*:*:*:*:*:apache:*:*","matchCriteriaId":"8FF38978-846A-409A-BEC7-81EADDF30F04","versionEndExcluding":"0.14.2","vulnerable":true}],"negate":false,"operator":"OR"}]},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*","matchCriteriaId":"D100F7CE-FC64-4CC6-852A-6136D72DA419","vulnerable":true},{"criteria":"cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*","matchCriteriaId":"97A4B8DF-58DA-4AB6-A1F9-331B36409BA3","vulnerable":true}],"negate":false,"operator":"OR"}]},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*","matchCriteriaId":"142AD0DD-4CF3-4D74-9442-459CE3347E3A","vulnerable":true},{"criteria":"cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*","matchCriteriaId":"33C068A4-3780-4EAB-A937-6082DF847564","vulnerable":true},{"criteria":"cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*","matchCriteriaId":"51EF4996-72F4-4FA4-814F-F5991E7A8318","vulnerable":true},{"criteria":"cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*","matchCriteriaId":"B353CE99-D57C-465B-AAB0-73EF581127D1","vulnerable":true},{"criteria":"cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*","matchCriteriaId":"BF77CDCF-B9C9-427D-B2BF-36650FB2148C","vulnerable":true},{"criteria":"cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*","matchCriteriaId":"B76AA310-FEC7-497F-AF04-C3EC1E76C4CC","vulnerable":true},{"criteria":"cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*","matchCriteriaId":"825ECE2D-E232-46E0-A047-074B34DB1E97","vulnerable":true}],"negate":false,"operator":"OR"}]},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*","matchCriteriaId":"23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D","vulnerable":true},{"criteria":"cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*","matchCriteriaId":"07C312A0-CD2C-4B9C-B064-6409B25C278F","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability was found in mod_auth_mellon before v0.14.2. If Apache is configured as a reverse proxy and mod_auth_mellon is configured to only let through authenticated users (with the require valid-user directive), adding special HTTP headers that are normally used to start the special SAML ECP (non-browser based) can be used to bypass authentication."},{"lang":"es","value":"Se ha detectado una vulnerabilidad en mod_auth_mellon, en versiones anteriores a la v0.14.2. Si Apache está configurado como proxy inverso y mod_auth_mellon está configurado para que solo deje acceder a los usuarios autenticados (con la directiva \"require valid-user\"), la adición de cabeceras HTTP especiales que se suelen emplear para iniciar el SAML ECP especial (no basado en el navegador) puede emplearse para omitir la autenticación."}],"id":"CVE-2019-3878","lastModified":"2026-06-17T02:35:47.417","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"MEDIUM","cvssData":{"accessComplexity":"MEDIUM","accessVector":"NETWORK","authentication":"NONE","availabilityImpact":"PARTIAL","baseScore":6.8,"confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:P","version":"2.0"},"exploitabilityScore":8.6,"impactScore":6.4,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":false}],"cvssMetricV30":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.0"},"exploitabilityScore":2.8,"impactScore":5.2,"source":"secalert@redhat.com","type":"Secondary"},{"cvssData":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.0"},"exploitabilityScore":2.2,"impactScore":5.9,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2019-03-26T18:29:00.983","references":[{"source":"secalert@redhat.com","url":"https://access.redhat.com/errata/RHBA-2019:0959"},{"source":"secalert@redhat.com","tags":["Third Party Advisory"],"url":"https://access.redhat.com/errata/RHSA-2019:0746"},{"source":"secalert@redhat.com","tags":["Third Party Advisory"],"url":"https://access.redhat.com/errata/RHSA-2019:0766"},{"source":"secalert@redhat.com","url":"https://access.redhat.com/errata/RHSA-2019:0985"},{"source":"secalert@redhat.com","tags":["Issue Tracking","Patch","Third Party Advisory"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3878"},{"source":"secalert@redhat.com","tags":["Exploit","Patch","Third Party Advisory"],"url":"https://github.com/Uninett/mod_auth_mellon/pull/196"},{"source":"secalert@redhat.com","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CNW5YMC5TLWVWNJEY6AIWNSNPRAMWPQJ/"},{"source":"secalert@redhat.com","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X7NLAU7KROWNTHAYSA2S67X347F42L2I/"},{"source":"secalert@redhat.com","tags":["Third Party Advisory"],"url":"https://usn.ubuntu.com/3924-1/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://access.redhat.com/errata/RHBA-2019:0959"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"url":"https://access.redhat.com/errata/RHSA-2019:0746"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"url":"https://access.redhat.com/errata/RHSA-2019:0766"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://access.redhat.com/errata/RHSA-2019:0985"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Patch","Third Party Advisory"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3878"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Patch","Third Party Advisory"],"url":"https://github.com/Uninett/mod_auth_mellon/pull/196"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CNW5YMC5TLWVWNJEY6AIWNSNPRAMWPQJ/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X7NLAU7KROWNTHAYSA2S67X347F42L2I/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"url":"https://usn.ubuntu.com/3924-1/"}],"sourceIdentifier":"secalert@redhat.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-305"}],"source":"secalert@redhat.com","type":"Secondary"},{"description":[{"lang":"en","value":"CWE-287"}],"source":"nvd@nist.gov","type":"Primary"}]}