Information Exposure Affecting xen package, versions <4.11.4+57-g41a822c392-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.05% (20th percentile)

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  • Snyk IDSNYK-DEBIAN10-XEN-1038769
  • published11 Nov 2020
  • disclosed10 Nov 2020

Introduced: 10 Nov 2020

CVE-2020-28368  (opens in a new tab)
CWE-203  (opens in a new tab)

How to fix?

Upgrade Debian:10 xen to version 4.11.4+57-g41a822c392-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xen package and not the xen package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

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.

CVSS Scores

version 3.1