CVE-2021-45955

{"id": "CVE-2021-45955", "cveTags": [{"tags": ["disputed"], "sourceIdentifier": "cve@mitre.org"}], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2022-01-01T00:15:08.677", "references": [{"url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35898", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-932.yaml", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016164.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35898", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-932.yaml", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016164.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "Dnsmasq 2.86 has a heap-based buffer overflow in resize_packet (called from FuzzResizePacket and fuzz_rfc1035.c) because of the lack of a proper bounds check upon pseudo header re-insertion. NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 \"do not represent real vulnerabilities, to the best of our knowledge.\" However, a contributor states that a security patch (mentioned in 016162.html) is needed"}, {"lang": "es", "value": "** EN DISPUTA ** Dnsmasq versi\u00f3n 2.86 presenta un desbordamiento de buffer en la regi\u00f3n heap de la memoria en la funci\u00f3n resize_packet (llamado desde FuzzResizePacket y fuzz_rfc1035.c). NOTA: la posici\u00f3n del proveedor es que CVE-2021-45951 a CVE-2021-45957 \"no representan vulnerabilidades reales, seg\u00fan nuestro conocimiento\". Sin embargo, un colaborador afirma que es necesario un parche de seguridad (mencionado en 016162.html)"}], "lastModified": "2024-11-21T06:33:21.440", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:thekelleys:dnsmasq:2.86:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8F823B95-CBE5-4597-9DEE-8E9B833940A7"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}