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THREATINT
PUBLISHED

CVE-2024-25581

Transfer requests received over DoH can lead to a denial of service in DNSdist

Reserved:2024-02-08
Published:2024-05-13
Updated:2024-05-13

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.



HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-20 Improper Input Validation

Product status

Default status
unaffected

1.9.0
affected

1.9.1
affected

1.9.2
affected

1.9.3
affected

Credits

Daniel Stirnimann from Switch finder

References

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

cve.org CVE-2024-25581

nvd.nist.gov CVE-2024-25581

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