CVE-2023-32067

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If a target resolver sends a query, the attacker forges a malformed UDP packet with a length of 0 and returns them to the target resolver. The target resolver erroneously interprets the 0 length as a graceful shutdown of the connection. This issue has been patched in version 1.19.1."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-400", "description": "CWE-400: Uncontrolled Resource Consumption"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2024-06-10T18:07:51.331Z"}}}, "cveMetadata": {"cveId": "CVE-2023-32067", "state": "PUBLISHED", "dateUpdated": "2025-02-13T16:50:20.105Z", "dateReserved": "2023-05-01T16:47:35.314Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2023-05-25T22:49:55.860Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.1"}

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If a target resolver sends a query, the attacker forges a malformed UDP packet with a length of 0 and returns them to the target resolver. The target resolver erroneously interprets the 0 length as a graceful shutdown of the connection. This issue has been patched in version 1.19.1."}], "id": "CVE-2023-32067", "lastModified": "2026-06-17T05:58:00.307", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-32067", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-07-16T18:37:41.012008Z", "version": "2.0.3"}}]}, "published": "2023-05-25T23:15:09.380", "references": [{"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/c-ares/c-ares/security/advisories/GHSA-9g78-jv2r-p7vc"}, {"source": "security-advisories@github.com", "tags": ["Mailing List"], "url": "https://lists.debian.org/debian-lts-announce/2023/06/msg00034.html"}, {"source": "security-advisories@github.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B5Z5XFNXTNPTCBBVXFDNZQVLLIE6VRBY/"}, {"source": "security-advisories@github.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBFWILTA33LOSV23P44FGTQQIDRJHIY7/"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202310-09"}, {"source": "security-advisories@github.com", "url": "https://security.netapp.com/advisory/ntap-20240605-0004/"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2023/dsa-5419"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes"], "url": "https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/c-ares/c-ares/security/advisories/GHSA-9g78-jv2r-p7vc"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "https://lists.debian.org/debian-lts-announce/2023/06/msg00034.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B5Z5XFNXTNPTCBBVXFDNZQVLLIE6VRBY/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBFWILTA33LOSV23P44FGTQQIDRJHIY7/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202310-09"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.netapp.com/advisory/ntap-20240605-0004/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2023/dsa-5419"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2023:3741", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "c-ares-0:1.10.0-3.el7_9.1", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2023-06-21T00:00:00Z"}, {"advisory": "RHSA-2023:4034", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "nodejs:16-8080020230608150024.63b34585", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2023-07-12T00:00:00Z"}, {"advisory": "RHSA-2023:4035", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "nodejs:18-8080020230607122508.63b34585", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2023-07-12T00:00:00Z"}, {"advisory": "RHSA-2023:3584", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "c-ares-0:1.13.0-6.el8_8.2", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2023-06-14T00:00:00Z"}, {"advisory": "RHSA-2023:3665", "cpe": "cpe:/o:redhat:rhel_e4s:8.1", "package": "c-ares-0:1.13.0-5.el8_1.1", "product_name": "Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions", "release_date": "2023-06-19T00:00:00Z"}, {"advisory": "RHSA-2023:3660", "cpe": "cpe:/o:redhat:rhel_aus:8.2", "package": "c-ares-0:1.13.0-5.el8_2.1", "product_name": "Red Hat Enterprise Linux 8.2 Advanced Update Support", "release_date": "2023-06-19T00:00:00Z"}, {"advisory": "RHSA-2023:3660", "cpe": "cpe:/o:redhat:rhel_tus:8.2", "package": "c-ares-0:1.13.0-5.el8_2.1", "product_name": "Red Hat Enterprise Linux 8.2 Telecommunications Update Service", "release_date": "2023-06-19T00:00:00Z"}, {"advisory": "RHSA-2023:3660", "cpe": "cpe:/o:redhat:rhel_e4s:8.2", "package": "c-ares-0:1.13.0-5.el8_2.1", "product_name": "Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions", "release_date": "2023-06-19T00:00:00Z"}, {"advisory": "RHSA-2023:3677", "cpe": "cpe:/o:redhat:rhel_aus:8.4", "package": "c-ares-0:1.13.0-5.el8_4.2", "product_name": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "release_date": "2023-06-20T00:00:00Z"}, {"advisory": "RHSA-2023:3677", "cpe": "cpe:/o:redhat:rhel_tus:8.4", "package": "c-ares-0:1.13.0-5.el8_4.2", "product_name": "Red Hat Enterprise Linux 8.4 Telecommunications Update Service", "release_date": "2023-06-20T00:00:00Z"}, {"advisory": "RHSA-2023:3677", "cpe": "cpe:/o:redhat:rhel_e4s:8.4", "package": "c-ares-0:1.13.0-5.el8_4.2", "product_name": "Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions", "release_date": "2023-06-20T00:00:00Z"}, {"advisory": "RHSA-2023:4033", "cpe": "cpe:/a:redhat:rhel_eus:8.6", "package": "nodejs:16-8060020230620060944.ad008a3a", "product_name": "Red Hat Enterprise Linux 8.6 Extended Update Support", "release_date": "2023-07-12T00:00:00Z"}, {"advisory": "RHSA-2023:3662", "cpe": "cpe:/o:redhat:rhel_eus:8.6", "package": "c-ares-0:1.13.0-6.el8_6.1", "product_name": "Red Hat Enterprise Linux 8.6 Extended Update Support", "release_date": "2023-06-19T00:00:00Z"}, {"advisory": "RHSA-2023:3559", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "c-ares-0:1.17.1-5.el9_2.1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-06-13T00:00:00Z"}, {"advisory": "RHSA-2023:3577", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "nodejs:18-9020020230531092345.rhel9", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-06-14T00:00:00Z"}, {"advisory": "RHSA-2023:3586", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "nodejs-1:16.19.1-2.el9_2", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-06-14T00:00:00Z"}, {"advisory": "RHSA-2023:3559", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "c-ares-0:1.17.1-5.el9_2.1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-06-13T00:00:00Z"}, {"advisory": "RHSA-2023:3583", "cpe": "cpe:/a:redhat:rhel_eus:9.0", "package": "c-ares-0:1.17.1-5.el9_0.1", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2023-06-14T00:00:00Z"}, {"advisory": "RHSA-2023:4036", "cpe": "cpe:/a:redhat:rhel_eus:9.0", "package": "nodejs-1:16.18.1-4.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2023-07-12T00:00:00Z"}, {"advisory": "RHSA-2023:4039", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-nodejs14-nodejs-0:14.21.3-4.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2023-07-12T00:00:00Z"}], "bugzilla": {"description": "c-ares: 0-byte UDP payload Denial of Service", "id": "2209502", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2209502"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-400", "details": ["c-ares is an asynchronous resolver library. c-ares is vulnerable to denial of service. If a target resolver sends a query, the attacker forges a malformed UDP packet with a length of 0 and returns them to the target resolver. The target resolver erroneously interprets the 0 length as a graceful shutdown of the connection. This issue has been patched in version 1.19.1.", "A vulnerability was found in c-ares. This issue occurs due to a 0-byte UDP payload that can cause a Denial of Service."], "name": "CVE-2023-32067", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "c-ares", "product_name": "Red Hat Enterprise Linux 6"}], "public_date": "2023-05-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-32067\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-32067\nhttps://github.com/c-ares/c-ares/security/advisories/GHSA-9g78-jv2r-p7vc"], "threat_severity": "Important"}

{}