Security Advisory

CVE-2024-25581

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2024-05-13 11:49:24

Last updated 2025-02-13 17:40:49

Assigner OX

State PUBLISHED

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.

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