CVE-2013-6422

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man-in-the-middle (MITM) attacks."}, {"lang": "es", "value": "El backend de GnuTLS en libcurl 7.21.4 a 7.33.0, cuando se desactiva la verificaci\u00f3n de firmas digitales (CURLOPT_SSL_VERIFYPEER), tambi\u00e9n desactiva la comprobaci\u00f3n CURLOPT_SSL_VERIFYHOST para nombres de host CN o SAN, lo cual facilita a atacantes remotos la suplantaci\u00f3n de servidores y la ejecuci\u00f3n de ataques man-in-the-middle (MITM)."}], "id": "CVE-2013-6422", "lastModified": "2026-06-17T00:00:27.647", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "HIGH", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.0, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:H/Au:N/C:P/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 4.9, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2013-12-23T22:55:02.943", "references": [{"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "http://curl.haxx.se/docs/adv_20131217.html"}, {"source": "secalert@redhat.com", "url": "http://www.debian.org/security/2013/dsa-2824"}, {"source": "secalert@redhat.com", "url": "http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html"}, {"source": "secalert@redhat.com", "url": "http://www.ubuntu.com/usn/USN-2058-1"}, {"source": "secalert@redhat.com", "url": "https://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c04463322"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://curl.haxx.se/docs/adv_20131217.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.debian.org/security/2013/dsa-2824"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": 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{"acknowledgement": "Red Hat would like to thank cURL project for reporting this issue. Upstream acknowledges Marc Deslauriers as the original reporter.", "bugzilla": {"description": "curl: TLS/SSL certificate name check disabled with peer verification when using GnuTLS", "id": "1037918", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1037918"}, "csaw": false, "cvss": {"cvss_base_score": "2.6", "cvss_scoring_vector": "AV:N/AC:H/Au:N/C:N/I:P/A:N", "status": "draft"}, "details": ["The GnuTLS backend in libcurl 7.21.4 through 7.33.0, when disabling digital signature verification (CURLOPT_SSL_VERIFYPEER), also disables the CURLOPT_SSL_VERIFYHOST check for CN or SAN host name fields, which makes it easier for remote attackers to spoof servers and conduct man-in-the-middle (MITM) attacks."], "name": "CVE-2013-6422", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "curl", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "curl", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "curl", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2013-12-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2013-6422\nhttps://nvd.nist.gov/vuln/detail/CVE-2013-6422\nhttp://curl.haxx.se/docs/adv_20131217.html"], "statement": "Not vulnerable. This issue did not affect the versions of curl as shipped with Red Hat Enterprise Linux 5 and 6.", "threat_severity": "Low"}

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