CVE-2018-16395

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When two OpenSSL::X509::Name objects are compared using ==, depending on the ordering, non-equal objects may return true. When the first argument is one character longer than the second, or the second argument contains a character that is one less than a character in the same position of the first argument, the result of == will be true. This could be leveraged to create an illegitimate certificate that may be accepted as legitimate and then used in signing or encryption operations."}, {"lang": "es", "value": "Se ha descubierto un problema en la biblioteca OpenSSL en Ruby, en versiones anteriores a la 2.3.8, versiones 2.4.x anteriores a la 2.4.5, versiones 2.5.x anteriores a la 2.5.2 y versiones 2.6.x anteriores a la 2.6.0-preview3. Cuando dos objetos OpenSSL::X509::Name se comparan mediante ==, dependiendo del orden, los objetos que no son iguales podr\u00edan devolver \"true\". Cuando el primer argumento tiene un car\u00e1cter m\u00e1s que el segundo, o el segundo argumento contiene un car\u00e1cter que tiene uno menos que el car\u00e1cter en la misma posici\u00f3n que el primer argumento, el resultado de == ser\u00e1 \"true\". Esto podr\u00eda aprovecharse para crear un certificado ileg\u00edtimo que podr\u00eda ser aceptado como leg\u00edtimo y despu\u00e9s emplearse en operaciones de firma o cifrado."}], "id": "CVE-2018-16395", "lastModified": "2026-06-17T01:44:12.863", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2018-11-16T18:29:00.943", "references": [{"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securitytracker.com/id/1042105"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2018:3729"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2018:3730"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": 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"tags": ["Mitigation", "Vendor Advisory"], "url": "https://www.ruby-lang.org/en/news/2018/10/17/openssl-x509-name-equality-check-does-not-work-correctly-cve-2018-16395/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-3-8-released/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-4-5-released/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-5-2-released/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://www.ruby-lang.org/en/news/2018/11/06/ruby-2-6-0-preview3-released/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2018:3738", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "ruby-0:2.0.0.648-34.el7_6", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2018-11-29T00:00:00Z"}, {"advisory": "RHSA-2019:1948", "cpe": "cpe:/o:redhat:rhel_eus:7.4", "package": "ruby-0:2.0.0.648-34.el7_4", "product_name": "Red Hat Enterprise Linux 7.4 Extended Update Support", "release_date": "2019-07-30T00:00:00Z"}, {"advisory": "RHSA-2019:2565", "cpe": "cpe:/o:redhat:rhel_eus:7.5", "package": "ruby-0:2.0.0.648-34.el7_5", "product_name": "Red Hat Enterprise Linux 7.5 Extended Update Support", "release_date": "2019-08-27T00:00:00Z"}, {"advisory": "RHSA-2018:3729", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el6", "package": "rh-ruby23-ruby-0:2.3.8-69.el6", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 6", "release_date": "2018-11-29T00:00:00Z"}, {"advisory": "RHSA-2018:3730", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el6", "package": "rh-ruby24-ruby-0:2.4.5-91.el6", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 6", "release_date": "2018-11-29T00:00:00Z"}, {"advisory": "RHSA-2018:3729", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby23-ruby-0:2.3.8-69.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2018-11-29T00:00:00Z"}, {"advisory": "RHSA-2018:3730", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby24-ruby-0:2.4.5-91.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2018-11-29T00:00:00Z"}, {"advisory": "RHSA-2018:3731", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby25-ruby-0:2.5.3-6.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2018-11-29T00:00:00Z"}, {"advisory": "RHSA-2018:3729", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby23-ruby-0:2.3.8-69.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS", "release_date": "2018-11-29T00:00:00Z"}, {"advisory": "RHSA-2018:3730", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby24-ruby-0:2.4.5-91.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS", "release_date": "2018-11-29T00:00:00Z"}, {"advisory": "RHSA-2018:3731", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby25-ruby-0:2.5.3-6.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS", "release_date": "2018-11-29T00:00:00Z"}, {"advisory": "RHSA-2018:3729", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby23-ruby-0:2.3.8-69.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS", "release_date": "2018-11-29T00:00:00Z"}, {"advisory": "RHSA-2018:3730", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby24-ruby-0:2.4.5-91.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS", "release_date": "2018-11-29T00:00:00Z"}, {"advisory": "RHSA-2018:3731", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby25-ruby-0:2.5.3-6.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS", "release_date": "2018-11-29T00:00:00Z"}, {"advisory": "RHSA-2018:3729", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby23-ruby-0:2.3.8-69.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2018-11-29T00:00:00Z"}, {"advisory": "RHSA-2018:3730", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby24-ruby-0:2.4.5-91.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2018-11-29T00:00:00Z"}, {"advisory": "RHSA-2018:3731", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby25-ruby-0:2.5.3-6.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2018-11-29T00:00:00Z"}], "bugzilla": {"description": "ruby: OpenSSL::X509:: Name equality check does not work correctly", "id": "1643086", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1643086"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "status": "verified"}, "cwe": "CWE-295", "details": ["An issue was discovered in the OpenSSL library in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. When two OpenSSL::X509::Name objects are compared using ==, depending on the ordering, non-equal objects may return true. When the first argument is one character longer than the second, or the second argument contains a character that is one less than a character in the same position of the first argument, the result of == will be true. This could be leveraged to create an illegitimate certificate that may be accepted as legitimate and then used in signing or encryption operations."], "name": "CVE-2018-16395", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Will not fix", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:rhel_sam:1", "fix_state": "Will not fix", "package_name": "ruby193", "product_name": "Red Hat Subscription Asset Manager"}, {"cpe": "cpe:/o:redhat:rhev_hypervisor:4", "fix_state": "Will not fix", "package_name": "ruby", "product_name": "Red Hat Virtualization 4"}], "public_date": "2018-10-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2018-16395\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-16395\nhttps://www.ruby-lang.org/en/news/2018/10/17/openssl-x509-name-equality-check-does-not-work-correctly-cve-2018-16395/"], "statement": "Subscription Asset Manager is now in a reduced support phase receiving only Critical impact security fixes. This issue has been rated as having a security impact of Important, and is not currently planned to be addressed in future updates.\nRed Hat Virtualization includes a vulnerable version of ruby, however the affected functionality is not used in Red Hat Virtualization or any of its dependencies. A future update may address this issue.", "threat_severity": "Important"}

{}