CVE-2020-28368

medium

Description

Xen through 4.14.x allows guest OS administrators to obtain sensitive information (such as AES keys from outside the guest) via a side-channel attack on a power/energy monitoring interface, aka a "Platypus" attack. NOTE: there is only one logically independent fix: to change the access control for each such interface in Xen.

References

https://platypusattack.com

https://www.zdnet.com/article/new-platypus-attack-can-steal-data-from-intel-cpus/

https://xenbits.xen.org/xsa/advisory-351.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/XV23EZIMNLJN4YXRRXLQV2ALW6ZEALXV/

http://www.openwall.com/lists/oss-security/2020/11/26/1

http://xenbits.xen.org/xsa/advisory-351.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/5J66QUUHXH2RR4CNCKQRGVXVSOUFRPDA/

https://www.debian.org/security/2020/dsa-4804

Details

Source: MITRE

Published: 2020-11-10

Updated: 2022-01-01

Type: CWE-862

Risk Information

CVSS v2

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 4.4

Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 0.8

Severity: MEDIUM