VDB
CVE-2020-29570
CVE-2020-29570
PUBLISHED
CVSS 6.199999809265137 MEDIUM
An issue was discovered in Xen through 4.14.x. Recording of the per-vCPU control block mapping maintained by Xen and that of pointers into the control block is reversed. The consumer assumes, seeing the former initialized, that the latter are also ready for use. Malicious or buggy guest kernels can mount a Denial of Service (DoS) attack affecting the entire system.
EPSS 0.38% · 29.3th percentile
Risk Scores
CVSS 3.1
6.199999809265137
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.38%
29.3th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:16.04:LTS | xen | 0, 4.5.1-0ubuntu1, 4.5.1-0ubuntu2 |
| Ubuntu:20.04:LTS | xen | 4.11.3+24-g14b62ab3e5-1ubuntu2.3, 4.11.3+24-g14b62ab3e5-1ubuntu1, 4.11.3+24-g14b62ab3e5-1ubuntu2.2 |
| Ubuntu:18.04:LTS | xen | 4.9.0-0ubuntu4, 0, 4.9.2-0ubuntu1 |
Timeline
- Dec 15, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 25, 2021 EPSS Score
- Oct 27, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Mar 2, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 4, 2022 EPSS Score
- Jul 6, 2022 EPSS Score
- Sep 8, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-29570 third-party-advisory
- https://xenbits.xen.org/xsa/advisory-358.html third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-29570 third-party-advisory