Vulnerability Details : CVE-2023-26249
Knot Resolver before 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service. Specifically, a single client query may lead to a hundred TCP connection attempts if a DNS server closes connections without providing a response.
Vulnerability category: Denial of service
Products affected by CVE-2023-26249
- cpe:2.3:a:nic:knot_resolver:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-26249
0.33%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 54 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-26249
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
134c704f-9b21-4f2e-91b3-4a467353bcc0 | 2025-03-14 |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2023-26249
-
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.Assigned by:
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
- nvd@nist.gov (Primary)
References for CVE-2023-26249
-
https://www.knot-resolver.cz/2023-01-26-knot-resolver-5.6.0.html
Knot Resolver 5.6.0 released – Knot ResolverRelease Notes;Vendor Advisory
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