CVE-2015-4020

{"id": "CVE-2015-4020", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}]}, "published": "2015-08-25T17:59:01.760", "references": [{"url": "http://blog.rubygems.org/2015/06/08/2.2.5-released.html", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "http://blog.rubygems.org/2015/06/08/2.4.8-released.html", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.securityfocus.com/bid/75431", "source": "cve@mitre.org"}, {"url": "https://github.com/rubygems/rubygems/commit/5c7bfb5", "source": "cve@mitre.org"}, {"url": "https://puppet.com/security/cve/CVE-2015-3900", "source": "cve@mitre.org"}, {"url": "https://www.trustwave.com/Resources/Security-Advisories/Advisories/TWSL2015-009/?fid=6478", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.trustwave.com/Resources/SpiderLabs-Blog/Attacking-Ruby-Gem-Security-with-CVE-2015-3900/", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-20"}]}], "descriptions": [{"lang": "en", "value": "RubyGems 2.0.x before 2.0.17, 2.2.x before 2.2.5, and 2.4.x before 2.4.8 does not validate the hostname when fetching gems or making API requests, which allows remote attackers to redirect requests to arbitrary domains via a crafted DNS SRV record with a domain that is suffixed with the original domain name, aka a \"DNS hijack attack.\" NOTE: this vulnerability exists because to an incomplete fix for CVE-2015-3900."}, {"lang": "es", "value": "RubyGems 2.0.x en versiones anteriores a 2.0.17, 2.2.x en versiones anteriores a 2.2.5 y 2.4.x en versiones anteriores a 2.4.8 no valida el nombre del host cuando recupera gemas o hace peticiones API, lo que permite a atacantes remotos redirigir peticiones a dominios arbitrarios mediante un registro DNS SRV con un dominio que est\u00e1 seguido del nombre del dominio original, tambi\u00e9n conocido como un \"atacque de secuestro DNS\". 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