CVE-2024-25581 Information

Description

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.

Reference

https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2024-03.html