VDB
CVE-2019-19331
CVE-2019-19331
PUBLISHED
CVSS 7.5 HIGH
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).
EPSS 2.11% · 81.5th percentile
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
2.11%
81.5th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:Pro:18.04:LTS | knot-resolver | 2.1.1-1ubuntu0.1~esm2, 0, 1.3.3-1 |
| Ubuntu:Pro:16.04:LTS | knot-resolver | 0, 1.0.0~beta2-123-g6134920-1, 1.0.0~beta3-1 |
| Ubuntu:20.04:LTS | knot-resolver | 0, 3.2.1-3, 3.2.1-3ubuntu1 |
Timeline
- Dec 16, 2019 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 25, 2021 EPSS Score
- Dec 29, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Mar 3, 2022 EPSS Score
- May 5, 2022 EPSS Score
- Jul 7, 2022 EPSS Score
- Sep 9, 2022 EPSS Score
- Nov 11, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2019-19331 advisory
- https://ubuntu.com/security/notices/USN-7047-1 advisory
- https://www.openwall.com/lists/oss-security/2019/12/04/4 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2019-19331 third-party-advisory