CVE-2023-26249

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.22%
Vendor Advisory knot-resolver.cz
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.knot-resolver.cz/2023-01-26-knot-resolver-5.6.0.html release notes vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-26249?
CVE-2023-26249 has been scored as a high severity vulnerability.
How to fix CVE-2023-26249?
To fix CVE-2023-26249, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-26249 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-26249 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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