CVE-2019-19331
CVE-2019-19331
This page contains facts from public vulnerability sources. Check the original advisory before updating.
knot-resolver before version 4.3.0 is vulnerable to denial of service through high CPU utilization. DNS replies with very many resource records might be processed very inefficiently, in extreme cases taking even several CPU seconds for each such uncached message. For example, a few thousand A records can be squashed into one DNS message (limit is 64kB).
CVSS 7.5 · High · EPSS 2.1% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
knot-resolver
- Versions
- 4.3.0: Affected
No fix published
knot-resolver Debian:12
- Affected ranges
- ECOSYSTEM: < 5.0.1-1
Update to 5.0.1-1
knot-resolver Debian:13
- Affected ranges
- ECOSYSTEM: < 5.0.1-1
Update to 5.0.1-1
knot-resolver Debian:14
- Affected ranges
- ECOSYSTEM: < 5.0.1-1
Update to 5.0.1-1
knot-resolver Ubuntu:Pro:16.04:LTS
- Versions
- 1.0.0~beta2-123-g6134920-1
- 1.0.0~beta3-1
- 1.0.0~beta3-1ubuntu0.1~esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
knot-resolver Ubuntu:Pro:18.04:LTS
- Versions
- 1.3.3-1
- 1.5.0-4
- 1.5.1-1
- 1.5.2-1
- 2.0.0-3
- 2.1.0-1
- 2.1.0-2
- 2.1.1-1
- 2.1.1-1ubuntu0.1~esm2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
knot-resolver Ubuntu:20.04:LTS
- Versions
- 3.2.1-3
- 3.2.1-3ubuntu1
- 3.2.1-3ubuntu2
- 3.2.1-3ubuntu2.1
- Affected ranges
- ECOSYSTEM: < 3.2.1-3ubuntu2.2
Update to 3.2.1-3ubuntu2.2