CVE-2020-2732 Detail

Current Description

A flaw was discovered in the way that the KVM hypervisor handled instruction emulation for an L2 guest when nested virtualisation is enabled. Under some circumstances, an L2 guest may trick the L0 guest into accessing sensitive L1 resources that should be inaccessible to the L2 guest.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  6.8 MEDIUM
Vector:  CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Nist CVSS score does not match with CNA score
CNA:  Oracle
Base Score:  5.8 MEDIUM
Vector:  CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1805135 Issue Tracking  Third Party Advisory 
https://git.kernel.org/linus/07721feee46b4b248402133228235318199b05ec Patch  Third Party Advisory 
https://git.kernel.org/linus/35a571346a94fb93b5b3b6a599675ef3384bc75c Patch  Third Party Advisory 
https://git.kernel.org/linus/e71237d3ff1abf9f3388337cfebf53b96df2020d Patch  Third Party Advisory 
https://linux.oracle.com/errata/ELSA-2020-5540.html Third Party Advisory 
https://linux.oracle.com/errata/ELSA-2020-5542.html Third Party Advisory 
https://linux.oracle.com/errata/ELSA-2020-5543.html Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
https://www.debian.org/security/2020/dsa-4667
https://www.debian.org/security/2020/dsa-4698
https://www.openwall.com/lists/oss-security/2020/02/25/3 Mailing List  Third Party Advisory 
https://www.spinics.net/lists/kvm/msg208259.html Patch  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor cwe source acceptance level NIST  

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-2732
NVD Published Date:
04/08/2020
NVD Last Modified:
06/10/2020
Source:
Oracle