CVE-2018-8970

{"id": "CVE-2018-8970", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 4.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 7.4, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 2.2}]}, "published": "2018-03-24T21:29:00.227", "references": [{"url": "https://boringssl.googlesource.com/boringssl/+/e759a9cd84198613199259dbed401f4951747cff", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.7.1-relnotes.txt", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/libressl-portable/openbsd/commit/0654414afcce51a16d35d05060190a3ec4618d42", "tags": ["Patch", "Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-295"}]}], "descriptions": [{"lang": "en", "value": "The int_x509_param_set_hosts function in lib/libcrypto/x509/x509_vpm.c in LibreSSL 2.7.0 before 2.7.1 does not support a certain special case of a zero name length, which causes silent omission of hostname verification, and consequently allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate. NOTE: the LibreSSL documentation indicates that this special case is supported, but the BoringSSL documentation does not."}, {"lang": "es", "value": "La funci\u00f3n int_x509_param_set_hosts en lib/libcrypto/x509/x509_vpm.c en LibreSSL, en versiones 2.7.0 anteriores a la 2.7.1 no soporta determinados casos especiales de una longitud de nombre cero. Esto provoca una omisi\u00f3n silenciosa de la verificaci\u00f3n del nombre de host y, en consecuencia, permite que atacantes Man-in-the-Middle (MitM) suplanten servidores y obtengan informaci\u00f3n sensible mediante un certificado manipulado. NOTA: la documentaci\u00f3n de LibreSSL indica que el programa soporta este caso especial, pero la documentaci\u00f3n de BoringSSL no."}], "lastModified": "2018-04-24T16:40:13.967", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:openbsd:libressl:2.7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "39DDFDEF-AD05-444B-8BCE-018EC7393F76"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}