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Allocation of Resources Without Limits or Throttling Affecting xen package, versions <4.15.0-r2

0.0
medium

Snyk CVSS

    Attack Complexity Low
    Privileges Required High
    Availability High

    Threat Intelligence

    EPSS 0.43% (75th percentile)
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NVD
4.9 medium
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SUSE
5.5 medium

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  • Snyk ID SNYK-ALPINE314-XEN-1583425
  • published 8 Sep 2021
  • disclosed 27 Aug 2021
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Introduced: 27 Aug 2021

CVE-2021-28700 Open this link in a new tab
CWE-770 Open this link in a new tab

How to fix?

Upgrade Alpine:3.14 xen to version 4.15.0-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.

xen/arm: No memory limit for dom0less domUs The dom0less feature allows an administrator to create multiple unprivileged domains directly from Xen. Unfortunately, the memory limit from them is not set. This allow a domain to allocate memory beyond what an administrator originally configured.

References