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Out-of-Bounds Affecting xen package, versions <4.14.0-r2

0.0
medium

Snyk CVSS

    Attack Complexity Low

    Threat Intelligence

    EPSS 0.05% (17th percentile)
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NVD
5.3 medium
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SUSE
6.2 medium

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  • Snyk ID SNYK-ALPINE314-XEN-1308521
  • published 21 Jan 2021
  • disclosed 22 Oct 2020
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Introduced: 22 Oct 2020

CVE-2020-27674 Open this link in a new tab
CWE-119 Open this link in a new tab

How to fix?

Upgrade Alpine:3.14 xen to version 4.14.0-r2 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:3.14 relevant fixed versions and status.

An issue was discovered in Xen through 4.14.x allowing x86 PV guest OS users to gain guest OS privileges by modifying kernel memory contents, because invalidation of TLB entries is mishandled during use of an INVLPG-like attack technique.

References