When incoming DNS over HTTPS support is enabled using the nghttp2 provider, and queries are routed to a tcp-only or DNS over TLS backend, an attacker can trigger an assertion failure in DNSdist by sending a request for a zone transfer (AXFR or IXFR) over DNS over HTTPS, causing the process to stop and thus leading to a Denial of Service. DNS over HTTPS is not enabled by default, and backends are using plain DNS (Do53) by default.
"}],"value":"When incoming DNS over HTTPS support is enabled using the nghttp2 provider, and queries are routed to a tcp-only or DNS over TLS backend, an attacker can trigger an assertion failure in DNSdist by sending a request for a zone transfer (AXFR or IXFR) over DNS over HTTPS, causing the process to stop and thus leading to a Denial of Service. DNS over HTTPS is not enabled by default, and backends are using plain DNS (Do53) by default."}],"impacts":[{"capecId":"CAPEC-212","descriptions":[{"lang":"en","value":"CAPEC-212 Functionality Misuse"}]}],"metrics":[{"cvssV3_1":{"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"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","description":"CWE-20 Improper Input Validation","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"8ce71d90-2354-404b-a86e-bec2cc4e6981","shortName":"OX","dateUpdated":"2024-06-10T17:12:42.212Z"},"references":[{"url":"https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2024-03.html"},{"url":"http://www.openwall.com/lists/oss-security/2024/05/13/1"}],"source":{"advisory":"PowerDNS Security Advisory 2024-03","discovery":"EXTERNAL"},"title":"Transfer requests received over DoH can lead to a denial of service in DNSdist","workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Option 1: refuse incoming XFR requests via a DNSdist rule: addAction(OrRule({QTypeRule(DNSQType.AXFR), QTypeRule(DNSQType.IXFR)}), RCodeAction(DNSRCode.REFUSED)). Option 2: switch to the legacy h2o provider by setting library='h2o' in the addDOHLocal directive
"}],"value":"Option 1: refuse incoming XFR requests via a DNSdist rule: addAction(OrRule({QTypeRule(DNSQType.AXFR), QTypeRule(DNSQType.IXFR)}), RCodeAction(DNSRCode.REFUSED)). Option 2: switch to the legacy h2o provider by setting library='h2o' in the addDOHLocal directive"}],"x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-25581","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-05-13T15:37:51.211764Z"}}}],"affected":[{"cpes":["cpe:2.3:a:powerdns:dnsdist:1.9.0:*:*:*:*:*:*:*"],"vendor":"powerdns","product":"dnsdist","versions":[{"status":"affected","version":"1.9.0"}],"defaultStatus":"unknown"},{"cpes":["cpe:2.3:a:powerdns:dnsdist:1.9.1:*:*:*:*:*:*:*"],"vendor":"powerdns","product":"dnsdist","versions":[{"status":"affected","version":"1.9.1"}],"defaultStatus":"unknown"},{"cpes":["cpe:2.3:a:powerdns:dnsdist:1.9.2:*:*:*:*:*:*:*"],"vendor":"powerdns","product":"dnsdist","versions":[{"status":"affected","version":"1.9.2"}],"defaultStatus":"unknown"},{"cpes":["cpe:2.3:a:powerdns:dnsdist:1.9.3:*:*:*:*:*:*:*"],"vendor":"powerdns","product":"dnsdist","versions":[{"status":"affected","version":"1.9.3"}],"defaultStatus":"unknown"}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-06-04T17:35:35.599Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-01T23:44:09.662Z"},"title":"CVE Program Container","references":[{"url":"https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2024-03.html","tags":["x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2024/05/13/1","tags":["x_transferred"]}]}]},"dataVersion":"5.1"}