CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 0CVE-2025-30194 – Denial of service via crafted DoH exchange
https://notcve.org/view.php?id=CVE-2025-30194
29 Apr 2025 — When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service. The remedy is: upgrade to the patched 1.9.9 version. A workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version. We would like to thank Charles Howes for bringing this issue to our attention. • https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-02.html • CWE-416: Use After Free •
CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 0CVE-2024-25581 – Transfer requests received over DoH can lead to a denial of service in DNSdist
https://notcve.org/view.php?id=CVE-2024-25581
13 May 2024 — 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. Cuando la compatibilidad con DNS entrante sobre HTTPS está habilitada mediante... • http://www.openwall.com/lists/oss-security/2024/05/13/1 • CWE-20: Improper Input Validation •