Information Exposure Affecting perf package, versions <0:4.14.173-137.228.amzn2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.05% (20th percentile)

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  • Snyk IDSNYK-AMZN2-PERF-1678783
  • published27 Sept 2021
  • disclosed8 Apr 2020

Introduced: 8 Apr 2020

CVE-2020-2732  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 perf to version 0:4.14.173-137.228.amzn2 or higher.
This issue was patched in ALAS2-2020-1405.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

A flaw was discovered in the way that the KVM hypervisor handled instruction emulation for an L2 guest when nested virtualisation is enabled. Under some circumstances, an L2 guest may trick the L0 guest into accessing sensitive L1 resources that should be inaccessible to the L2 guest.

CVSS Scores

version 3.1