{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-30187", "assignerOrgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981", "state": "PUBLISHED", "assignerShortName": "OX", "dateReserved": "2025-03-18T08:39:46.884Z", "datePublished": "2025-09-18T09:21:32.274Z", "dateUpdated": "2025-09-18T09:21:32.274Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.powerdns.com/", "defaultStatus": "unaffected", "modules": ["Incoming DoH via nghttp2"], "packageName": "dnsdnsdist", "product": "DNSdist", "programFiles": ["dnsdist-nghttp2-in.cc"], "repo": "https://github.com/PowerDNS/pdns", "vendor": "PowerDNS", "versions": [{"lessThan": "1.9.11", "status": "affected", "version": "1.9.0", "versionType": "semver"}, {"lessThan": "2.0.1", "status": "affected", "version": "2.0.0", "versionType": "semver"}]}], "datePublic": "2025-09-18T09:20:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>In some circumstances, when DNSdist is configured to use the nghttp2 library to process incoming DNS over HTTPS queries, an attacker might be able to cause a denial of service by crafting a DoH exchange that triggers an unbounded I/O read loop, causing an unexpected consumption of CPU resources.</p>"}], "value": "In some circumstances, when DNSdist is configured to use the nghttp2 library to process incoming DNS over HTTPS queries, an attacker might be able to cause a denial of service by crafting a DoH exchange that triggers an unbounded I/O read loop, causing an unexpected consumption of CPU resources."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 3.7, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-835", "description": "CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981", "shortName": "OX", "dateUpdated": "2025-09-18T09:21:32.274Z"}, "references": [{"url": "https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-05.html"}], "source": {"advisory": "PowerDNS Security Advisory 2025-05", "discovery": "EXTERNAL"}, "title": "Denial of service via crafted DoH exchange in PowerDNS DNSdist", "x_generator": {"engine": "Vulnogram 0.2.0"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "In some circumstances, when DNSdist is configured to use the nghttp2 library to process incoming DNS over HTTPS queries, an attacker might be able to cause a denial of service by crafting a DoH exchange that triggers an unbounded I/O read loop, causing an unexpected consumption of CPU resources."}], "id": "CVE-2025-30187", "lastModified": "2025-09-18T10:15:32.993", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 3.7, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 1.4, "source": "security@open-xchange.com", "type": "Secondary"}]}, "published": "2025-09-18T10:15:32.993", "references": [{"source": "security@open-xchange.com", "url": "https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-05.html"}], "sourceIdentifier": "security@open-xchange.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-835"}], "source": "security@open-xchange.com", "type": "Secondary"}]}

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