CVE-2023-26249
Last modified
CVE-2023-26249 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 0.71% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Nic | Knot Resolver | < 5.6.0 |
References
- https://www.knot-resolver.cz/2023-01-26-knot-resolver-5.6.0.htmlRelease Notes, Vendor Advisory
- https://www.knot-resolver.cz/2023-01-26-knot-resolver-5.6.0.htmlRelease Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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