| Name | CVE-2022-40188 |
| Description | Knot Resolver before 5.5.3 allows remote attackers to cause a denial of service (CPU consumption) because of algorithmic complexity. During an attack, an authoritative server must return large NS sets or address sets. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3139-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| knot-resolver (PTS) | buster | 3.2.1-3 | vulnerable |
| buster (security) | 3.2.1-3+deb10u1 | fixed |
| bullseye | 5.3.1-1+deb11u1 | vulnerable |
| bookworm | 5.6.0-1 | fixed |
| bookworm (security) | 5.6.0-1+deb12u1 | fixed |
| trixie | 5.7.1-1 | fixed |
| sid | 5.7.2-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[bullseye] - knot-resolver <no-dsa> (Minor issue)
https://github.com/CZ-NIC/knot-resolver/commit/f6577a20e493c7fbdac124d7544bf1846b084185 (v5.5.3)
https://www.knot-resolver.cz/2022-09-21-knot-resolver-5.5.3.html