CVE-2023-26249
Fixed in a distro release EPSS <1%CVSS 7.5
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.
Products: nic knot_resolver
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | knot-resolver | 5.6.0-1 |
| Debian 13 | knot-resolver | 5.6.0-1 |
| Debian 14 | knot-resolver | 5.6.0-1 |
| Ubuntu 20.04 LTS | knot-resolver | no fix |
| Ubuntu Pro 16.04 LTS | knot-resolver | no fix |
| Ubuntu Pro 18.04 LTS | knot-resolver | no fix |
| Ubuntu Pro 22.04 LTS | knot-resolver | no fix |