CVE-2025-30187 — Denial of service via crafted DoH exchange in PowerDNS DNSdist

CVE-2025-30187

Denial of service via crafted DoH exchange in PowerDNS DNSdist PUBLISHED

Description (CNA)

In some circumstances, when DNSdist is configured to use the nghttp2 library to process incoming DNS over HTTPS queries, an attacker might be able to cause a denial of service by crafting a DoH exchange that triggers an unbounded I/O read loop, causing an unexpected consumption of CPU resources.

Affected (CNA)

Vendor / product	Versions
PowerDNS / DNSdist	affected 1.9.0 before 1.9.11; affected 2.0.0 before 2.0.1

CWE

CWE-835

References

https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-05.html

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

CVE

No English description supplied.

http://www.openwall.com/lists/oss-security/2025/09/18/1