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FreeBSD: VID-F2D8342F-1134-11EF-8791-6805CA2FA271 (CVE-2024-25581): dnsdist -- Transfer requests received over DoH can lead to a denial of service

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FreeBSD: VID-F2D8342F-1134-11EF-8791-6805CA2FA271 (CVE-2024-25581): dnsdist -- Transfer requests received over DoH can lead to a denial of service

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
05/13/2024
Created
05/22/2024
Added
05/15/2024
Modified
05/15/2024

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.

Solution(s)

  • freebsd-upgrade-package-dnsdist

References

  • CVE-2024-25581

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