CVE-2021-23386

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{}

{"affected": [{"affectedData": [{"product": "dns-packet", "vendor": "n/a", "versions": [{"lessThan": "5.2.2", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "report@snyk.io"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:dns-packet_project:dns-packet:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "762967F6-7E35-496E-B72E-4CDD935C42B8", "versionEndExcluding": "1.3.4", "vulnerable": true}, {"criteria": "cpe:2.3:a:dns-packet_project:dns-packet:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "D5C4FFB0-2B90-4CDA-99CF-DE77EC8643CF", "versionEndExcluding": "5.2.2", "versionStartIncluding": "2.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "This affects the package dns-packet before 5.2.2. It creates buffers with allocUnsafe and does not always fill them before forming network packets. This can expose internal application memory over unencrypted network when querying crafted invalid domain names."}, {"lang": "es", "value": "Esto afecta al paquete dns-packet versi\u00f3n anterior a 5.2.2.&#xa0;Crea b\u00faferes con el par\u00e1metro allocUnsafe y no siempre los llena antes de formar paquetes de red.&#xa0;Esto puede exponer la memoria interna de la aplicaci\u00f3n por medio de una red no cifrada cuando se consultan nombres de dominio no v\u00e1lidos dise\u00f1ados"}], "id": "CVE-2021-23386", "lastModified": "2026-06-17T03:38:40.063", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 4.0, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.3, "source": "report@snyk.io", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-05-20T17:15:07.567", "references": [{"source": "report@snyk.io", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/mafintosh/dns-packet/commit/25f15dd0fedc53688b25fd053ebbdffe3d5c1c56"}, {"source": "report@snyk.io", "tags": ["Permissions Required", "Third Party Advisory"], "url": "https://hackerone.com/bugs?subject=user&amp%3Breport_id=968858"}, {"source": "report@snyk.io", "tags": ["Patch", "Third Party Advisory"], "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1295719"}, {"source": "report@snyk.io", "tags": ["Patch", "Third Party Advisory"], "url": "https://snyk.io/vuln/SNYK-JS-DNSPACKET-1293563"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/mafintosh/dns-packet/commit/25f15dd0fedc53688b25fd053ebbdffe3d5c1c56"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Permissions Required", "Third Party Advisory"], "url": "https://hackerone.com/bugs?subject=user&amp%3Breport_id=968858"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1295719"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://snyk.io/vuln/SNYK-JS-DNSPACKET-1293563"}], "sourceIdentifier": "report@snyk.io", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-909"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "dns-packet: does not always fill buffers before forming network packets which couls result in Remote Memory Exposure", "id": "1964072", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1964072"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-200", "details": ["This affects the package dns-packet before 5.2.2. It creates buffers with allocUnsafe and does not always fill them before forming network packets. This can expose internal application memory over unencrypted network when querying crafted invalid domain names.", "Remote memory exposure vulnerability was found in nodejs dns-packet library. The buffers (created with `allocUnsafe`) are not always filled before forming the network packets and an attacker can use this vulnerability to potentially get access to internal application memory over non encrypted networks when querying crafted invalid domain names."], "name": "CVE-2021-23386", "package_state": [{"cpe": "cpe:/a:redhat:service_mesh:2.0", "fix_state": "Will not fix", "package_name": "servicemesh-prometheus", "product_name": "OpenShift Service Mesh 2.0"}, {"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Not affected", "package_name": "rhacm2/console-rhel8", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}, {"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Not affected", "package_name": "rhacm2/kui-web-terminal-rhel8", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}, {"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Not affected", "package_name": "rhacm2/search-ui-rhel8", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}, {"cpe": "cpe:/a:redhat:jboss_fuse:7", "fix_state": "Not affected", "package_name": "apicurito", "product_name": "Red Hat Fuse 7"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Will not fix", "package_name": "openshift4/ose-prometheus", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Will not fix", "package_name": "openshift4/ose-thanos-rhel8", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2021-05-20T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-23386\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-23386\nhttps://snyk.io/vuln/SNYK-JS-DNSPACKET-1293563"], "threat_severity": "Moderate"}

{}