Access Restriction Bypass Affecting xen package, versions <4.7.1-r4


0.0
high

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.06% (24th percentile)
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NVD
7.8 high

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  • Snyk ID SNYK-ALPINE314-XEN-1308618
  • published 21 Jul 2020
  • disclosed 26 Jan 2017

How to fix?

Upgrade Alpine:3.14 xen to version 4.7.1-r4 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.

Xen through 4.8.x allows local 64-bit x86 HVM guest OS users to gain privileges by leveraging mishandling of SYSCALL singlestep during emulation.