CVE-2011-0520

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:maradns:maradns:1.4.03:*:*:*:*:*:*:*", "matchCriteriaId": "3F496D23-5A2F-4C76-A02B-9B3A8C143D1F", "vulnerable": true}, {"criteria": "cpe:2.3:a:maradns:maradns:1.4.05:*:*:*:*:*:*:*", "matchCriteriaId": "E3696E4F-7680-4DF5-8A46-440B6F4774C9", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The compress_add_dlabel_points function in dns/Compress.c in MaraDNS 1.4.03, 1.4.05, and probably other versions allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a long DNS hostname with a large number of labels, which triggers a heap-based buffer overflow."}, {"lang": "es", "value": "La funci\u00f3n compress_add_dlabel_points en dns/Compress.c de MaraDNS v1.4.03, v1.4.05 y puede que otras versiones, permite a atacantes remotos provocar una denegaci\u00f3n de servicio (fallo de segmentaci\u00f3n) y posibilidad de ejecutar c\u00f3digo de su elecci\u00f3n a trav\u00e9s de un nombre de DNS largo con un largo n\u00famero de etiquetas, esto provoca un desbordamiento de b\u00fafer basado en memoria din\u00e1mica."}], "id": "CVE-2011-0520", "lastModified": "2026-06-16T23:27:33.143", "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}]}, "published": "2011-01-28T16:00:04.673", "references": [{"source": "secalert@redhat.com", "url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=610834"}, {"source": "secalert@redhat.com", "url": "http://osvdb.org/70630"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/43027"}, {"source": "secalert@redhat.com", "url": "http://secunia.com/advisories/43107"}, {"source": "secalert@redhat.com", "url": "http://www.debian.org/security/2011/dsa-2196"}, {"source": "secalert@redhat.com", "url": "http://www.openwall.com/lists/oss-security/2011/01/24/1"}, {"source": "secalert@redhat.com", "url": "http://www.openwall.com/lists/oss-security/2011/01/24/6"}, {"source": "secalert@redhat.com", "url": "http://www.securityfocus.com/bid/45966"}, {"source": "secalert@redhat.com", "url": "http://www.vupen.com/english/advisories/2011/0699"}, {"source": "secalert@redhat.com", "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/64885"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=610834"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://osvdb.org/70630"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/43027"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://secunia.com/advisories/43107"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.debian.org/security/2011/dsa-2196"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2011/01/24/1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2011/01/24/6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securityfocus.com/bid/45966"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.vupen.com/english/advisories/2011/0699"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/64885"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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