CVE-2020-27674
Severity CVSS v4.0:
Pending analysis
Type:
CWE-787
Out-of-bounds Write
Publication date:
22/10/2020
Last modified:
07/11/2023
Description
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.
Impact
Base Score 3.x
5.30
Severity 3.x
MEDIUM
Base Score 2.0
4.60
Severity 2.0
MEDIUM
Vulnerable products and versions
CPE | From | Up to |
---|---|---|
cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* | 4.14.0 (including) | |
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* | ||
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* | ||
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | ||
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
To consult the complete list of CPE names with products and versions, see this page
References to Advisories, Solutions, and Tools
- http://www.openwall.com/lists/oss-security/2021/01/19/5
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PZAM3LYJ5TZLSSNL3KXFILM46QKVTOUA/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3U4LNKKXU4UP4Z5XP6TMIWSML3QODPE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/
- https://security.gentoo.org/glsa/202011-06
- https://www.debian.org/security/2020/dsa-4804
- https://xenbits.xen.org/xsa/advisory-286.html