| Name | CVE-2025-30187 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1115643 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| dnsdist (PTS) | bullseye | 1.5.1-3 | fixed |
| bookworm | 1.7.3-2 | fixed | |
| trixie | 1.9.10-1 | vulnerable | |
| forky, sid | 2.0.0-6 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| dnsdist | source | bullseye | (not affected) | |||
| dnsdist | source | bookworm | (not affected) | |||
| dnsdist | source | (unstable) | (unfixed) | 1115643 |
[bookworm] - dnsdist <not-affected> (Vulnerable code not present)
[bullseye] - dnsdist <not-affected> (Vulnerable code not present)
https://www.openwall.com/lists/oss-security/2025/09/18/1
https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-05.html