dnsdist: When incoming DNS over HTTPS support is enabled using the nghttp2 provider, and queries are routed to a tcp-only or D...
CVE-2024-25581 is fixed in dnsdist on 1 platform, first by DEBIAN-CVE-2024-25581, released May 14, 2024. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| dnsdist · Debian 13.5 (trixie) | 1.9.4-1 | DEBIAN-CVE-2024-25581 | May 14, 2024 |
| dnsdist · Debian 14 | 1.9.4-1 | DEBIAN-CVE-2024-25581 | May 14, 2024 |
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