CVE-2022-40188
- State
- Published
- Severity
- 7.5 High
- Published
- Sep 23, 2022
- Updated
- May 27, 2025
- Reserved
- Sep 8, 2022
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
Weaknesses
- CWE-407 Inefficient Algorithmic Complexity
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- https://gitlab.nic.cz/knot/knot-resolver/-/merge_requests/1343#note_262558
- FEDORA-2022-68ad89b21cvendor-advisory
- FEDORA-2022-357cc1a81bvendor-advisory
- FEDORA-2022-2a4ca7b18dvendor-advisory
- [debian-lts-announce] 20221008 [SECURITY] [DLA 3139-1] knot-resolver security updatemailing-list
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