knot-resolver: Knot Resolver before 5.5.3 allows remote attackers to cause a denial of service (CPU consumption) because of algorith...
CVE-2022-40188 is fixed in 3 products on 1 platform, first by knot-resolver 2.1.1-1ubuntu0.1~esm2, released September 23, 2022. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| knot-resolver · Debian 12.15 (bookworm) | 5.5.3-1 | DEBIAN-CVE-2022-40188 | Sep 23, 2022 |
| knot-resolver · Debian 13.5 (trixie) | 5.5.3-1 | DEBIAN-CVE-2022-40188 | Sep 23, 2022 |
| knot-resolver · Debian 14 | 5.5.3-1 | DEBIAN-CVE-2022-40188 | Sep 23, 2022 |
| knot-resolver · Ubuntu 18.04.6 LTS (bionic) | 2.1.1-1ubuntu0.1~esm2 | knot-resolver 2.1.1-1ubuntu0.1~esm2 | Sep 23, 2022 |
| knot-resolver · Ubuntu 20.04 LTS (focal) | 3.2.1-3ubuntu2.1 | knot-resolver 3.2.1-3ubuntu2.1 | Sep 23, 2022 |
| knot-resolver · Ubuntu 22.04.1 LTS (jammy) | 5.4.4-1ubuntu0.1~esm1 | knot-resolver 5.4.4-1ubuntu0.1~esm1 | Sep 23, 2022 |
| knot-resolver-module-http · Ubuntu 18.04.6 LTS (bionic) | 2.1.1-1ubuntu0.1~esm2 | knot-resolver-module-http 2.1.1-1ubuntu0.1~esm2 | Sep 23, 2022 |
| knot-resolver-module-http · Ubuntu 20.04 LTS (focal) | 3.2.1-3ubuntu2.1 | knot-resolver-module-http 3.2.1-3ubuntu2.1 | Sep 23, 2022 |
| knot-resolver-module-http · Ubuntu 22.04.1 LTS (jammy) | 5.4.4-1ubuntu0.1~esm1 | knot-resolver-module-http 5.4.4-1ubuntu0.1~esm1 | Sep 23, 2022 |
| libkres6 · Ubuntu 18.04.6 LTS (bionic) | 2.1.1-1ubuntu0.1~esm2 | libkres6 2.1.1-1ubuntu0.1~esm2 | Sep 23, 2022 |
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