VDB
CVE-2020-27674
CVE-2020-27674
PUBLISHED
CVSS 5.300000190734863 MEDIUM
An issue was discovered in Xen through 4.14.x allowing x86 PV guest OS users to gain guest OS privileges by modifying kernel memory contents, because invalidation of TLB entries is mishandled during use of an INVLPG-like attack technique.
EPSS 0.36% · 27.0th percentile
Risk Scores
CVSS 3.1
5.300000190734863
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
EPSS Score
0.36%
27.0th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:16.04:LTS | xen | 0, 4.5.1-0ubuntu1, 4.6.0-1ubuntu1 |
| Ubuntu:20.04:LTS | xen | 4.11.3+24-g14b62ab3e5-1ubuntu2.3, 4.9.2-0ubuntu7, 4.11.3+24-g14b62ab3e5-1ubuntu1 |
| Ubuntu:18.04:LTS | xen | 4.9.0-0ubuntu3, 4.9.0-0ubuntu4, 4.9.2-0ubuntu1 |
Timeline
- Oct 22, 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 1, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 3, 2022 EPSS Score
- Jul 5, 2022 EPSS Score
- Sep 7, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-27674 third-party-advisory
- https://xenbits.xen.org/xsa/advisory-286.html third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-27674 third-party-advisory