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"vulnerable": true}, {"criteria": "cpe:2.3:a:isc:dhcp:4.2.2:b1:*:*:*:*:*:*", "matchCriteriaId": "53551545-041A-456F-BC81-E05A6B3CB198", "vulnerable": true}, {"criteria": "cpe:2.3:a:isc:dhcp:4.2.2:rc1:*:*:*:*:*:*", "matchCriteriaId": "0F3DBB40-638E-4A4B-99B4-534D2564E146", "vulnerable": true}, {"criteria": "cpe:2.3:a:isc:dhcp:4.2.3:*:*:*:*:*:*:*", "matchCriteriaId": "493B7D92-18A4-4221-AEDD-917404C47E6D", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The logging functionality in dhcpd in ISC DHCP before 4.2.3-P2, when using Dynamic DNS (DDNS) and issuing IPv6 addresses, does not properly handle the DHCPv6 lease structure, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via crafted packets related to a lease-status update."}, {"lang": "es", "value": "La funcionalidad de registro en el dhcpd de ISC DHCP anterior a v4.2.3-P2, cuando se utiliza DNS din\u00e1mico (DDNS) y direcciones IPv6, no maneja correctamente la estructura de arrendamiento (lease structure) DHCPv6, permitiendo a atacantes remotos provocar una denegaci\u00f3n de servicio (puntero a NULL y el ca\u00edda del servicio) mediante paquetes especialmente elaborados en relaci\u00f3n con una actualizaci\u00f3n lease-status."}], "id": "CVE-2011-4868", "lastModified": "2016-12-03T02:59:51.167", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 6.1, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:A/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0"}, "exploitabilityScore": 6.5, "impactScore": 6.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2012-01-15T03:55:12.953", "references": [{"source": "cve@mitre.org", "url": "http://security.gentoo.org/glsa/glsa-201301-06.xml"}, {"source": "cve@mitre.org", "url": "https://deepthought.isc.org/article/AA-00595"}, {"source": "cve@mitre.org", "url": "https://kb.isc.org/article/AA-00705"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://www.isc.org/software/dhcp/advisories/cve-2011-4868"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-399"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "dhcp: error in DDNS processing of DHCPv6 leases can cause ISC dhcpd crash", "id": "781242", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=781242"}, "csaw": false, "cvss": {"cvss_base_score": "5.0", "cvss_scoring_vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "status": "draft"}, "details": ["The logging functionality in dhcpd in ISC DHCP before 4.2.3-P2, when using Dynamic DNS (DDNS) and issuing IPv6 addresses, does not properly handle the DHCPv6 lease structure, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via crafted packets related to a lease-status update."], "name": "CVE-2011-4868", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Not affected", "package_name": "dhcp", "product_name": "Red Hat Enterprise Linux 4"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "dhcp", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "dhcp", "product_name": "Red Hat Enterprise Linux 6"}], "public_date": "2012-01-12T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2011-4868\nhttps://nvd.nist.gov/vuln/detail/CVE-2011-4868"], "statement": "Not vulnerable. This issue did not affect the versions of dhcp as shipped with Red Hat Enterprise Linux 4, 5, and 6 as they did not include support for enhanced DDNS logging.", "threat_severity": "Moderate"}