Show plain JSON{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://www.isc.org/software/dhcp/advisories/cve-2011-4539", "name": "https://www.isc.org/software/dhcp/advisories/cve-2011-4539", "tags": ["Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "http://www.securitytracker.com/id?1026393", "name": "1026393", "tags": ["Third Party Advisory", "VDB Entry"], "refsource": "SECTRACK"}, {"url": "http://www.securityfocus.com/bid/50971", "name": "50971", "tags": ["Third Party Advisory", "VDB Entry"], "refsource": "BID"}, {"url": "http://secunia.com/advisories/47153", "name": "47153", "tags": ["Third Party Advisory"], "refsource": "SECUNIA"}, {"url": "http://www.mandriva.com/security/advisories?name=MDVSA-2011:182", "name": "MDVSA-2011:182", "tags": ["Third Party Advisory"], "refsource": "MANDRIVA"}, {"url": "http://www.ubuntu.com/usn/USN-1309-1", "name": "USN-1309-1", "tags": ["Third Party Advisory"], "refsource": "UBUNTU"}, {"url": "http://secunia.com/advisories/47178", "name": "47178", "tags": ["Third Party Advisory"], "refsource": "SECUNIA"}, {"url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-December/070980.html", "name": "FEDORA-2011-16981", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "FEDORA"}, {"url": "http://lists.opensuse.org/opensuse-updates/2011-12/msg00006.html", "name": "openSUSE-SU-2011:1318", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "SUSE"}, {"url": "http://www.debian.org/security/2012/dsa-2519", "name": "DSA-2519", "tags": ["Third Party Advisory"], "refsource": "DEBIAN"}, {"url": "http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071549.html", "name": "FEDORA-2011-16976", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "FEDORA"}, {"url": "http://security.gentoo.org/glsa/glsa-201301-06.xml", "name": "GLSA-201301-06", "tags": ["Third Party Advisory"], "refsource": "GENTOO"}, {"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/71680", "name": "isc-dhcp-dhcpd-regex-dos(71680)", "tags": ["Third Party Advisory", "VDB Entry"], "refsource": "XF"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "dhcpd in ISC DHCP 4.x before 4.2.3-P1 and 4.1-ESV before 4.1-ESV-R4 does not properly handle regular expressions in dhcpd.conf, which allows remote attackers to cause a denial of service (daemon crash) via a crafted request packet."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-20"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2011-4539", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "severity": "MEDIUM", "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}}, "publishedDate": "2011-12-08T11:55Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:isc:dhcp:4.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:isc:dhcp:4.0.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:isc:dhcp:4.0.1:-:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:isc:dhcp:4.0.1:b1:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:isc:dhcp:4.0.1:rc1:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:isc:dhcp:4.0.2:-:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:isc:dhcp:4.0.2:b1:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": 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