CVE-2023-26249
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductNic Knot Resolver
PublishedFeb 21, 2023
First seenFeb 21, 2023
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- nic knot_resolver5.6.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| nic knot_resolver | v < 5.6.0 | 5.6.0 |
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