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CVE-2017-14319 Affecting xen package, versions <4.9.0-r4

0.0
high

Snyk CVSS

    Attack Complexity Low
    Scope Changed
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.06% (26th percentile)
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NVD
8.8 high

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  • Snyk ID SNYK-ALPINE314-XEN-1308679
  • published 21 Jul 2020
  • disclosed 12 Sep 2017
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Introduced: 12 Sep 2017

CVE-2017-14319 Open this link in a new tab

How to fix?

Upgrade Alpine:3.14 xen to version 4.9.0-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.

A grant unmapping issue was discovered in Xen through 4.9.x. When removing or replacing a grant mapping, the x86 PV specific path needs to make sure page table entries remain in sync with other accounting done. Although the identity of the page frame was validated correctly, neither the presence of the mapping nor page writability were taken into account.