Vulnerability Details : CVE-2020-27670
An issue was discovered in Xen through 4.14.x allowing x86 guest OS users to cause a denial of service (data corruption), cause a data leak, or possibly gain privileges because an AMD IOMMU page-table entry can be half-updated.
Vulnerability category: Denial of service
Products affected by CVE-2020-27670
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:*
- cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-27670
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 12 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-27670
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
6.9
|
MEDIUM | AV:L/AC:M/Au:N/C:C/I:C/A:C |
3.4
|
10.0
|
NIST | |
7.8
|
HIGH | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |
1.1
|
6.0
|
NIST |
CWE ids for CVE-2020-27670
-
The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-27670
-
http://xenbits.xen.org/xsa/advisory-347.html
XSA-347 - Xen Security AdvisoriesPatch;Vendor Advisory
-
https://www.debian.org/security/2020/dsa-4804
Debian -- Security Information -- DSA-4804-1 xenThird Party Advisory
-
http://www.openwall.com/lists/oss-security/2021/01/19/9
oss-security - Xen Security Advisory 347 v3 (CVE-2020-27670) - unsafe AMD IOMMU page table updatesMailing List;Third Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html
[security-announce] openSUSE-SU-2020:1844-1: important: Security updateMailing List;Third Party Advisory
-
https://security.gentoo.org/glsa/202011-06
Xen: Multiple vulnerabilities (GLSA 202011-06) — Gentoo securityThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/
[SECURITY] Fedora 31 Update: xen-4.12.3-8.fc31 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://xenbits.xen.org/xsa/advisory-347.html
XSA-347 - Xen Security AdvisoriesPatch;Vendor Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html
[security-announce] openSUSE-SU-2020:1783-1: important: Security updateMailing List;Third Party Advisory
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