Information Exposure Affecting xen package, versions <4.9.0-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.33% (71st percentile)

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  • Snyk IDSNYK-ALPINE316-XEN-2846042
  • published21 Jul 2020
  • disclosed5 Jul 2017

Introduced: 5 Jul 2017

CVE-2017-10916  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Alpine:3.16 xen to version 4.9.0-r0 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 Alpine. See How to fix? for Alpine:3.16 relevant fixed versions and status.

The vCPU context-switch implementation in Xen through 4.8.x improperly interacts with the Memory Protection Extensions (MPX) and Protection Key (PKU) features, which makes it easier for guest OS users to defeat ASLR and other protection mechanisms, aka XSA-220.