Incorrect Authorization Affecting container-tools:rhel8/fuse-overlayfs package, versions <0:1.0.0-2.module+el8.2.1+6465+1a51e8b6


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-RHEL8-CONTAINERTOOLS-3770516
  • published26 Jul 2021
  • disclosed10 Feb 2021

Introduced: 10 Feb 2021

CVE-2021-20188  (opens in a new tab)
CWE-863  (opens in a new tab)

How to fix?

Upgrade RHEL:8 container-tools:rhel8/fuse-overlayfs to version 0:1.0.0-2.module+el8.2.1+6465+1a51e8b6 or higher.
This issue was patched in RHSA-2020:3053.

NVD Description

Note: Versions mentioned in the description apply only to the upstream container-tools:rhel8/fuse-overlayfs package and not the container-tools:rhel8/fuse-overlayfs package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

A flaw was found in podman before 1.7.0. File permissions for non-root users running in a privileged container are not correctly checked. This flaw can be abused by a low-privileged user inside the container to access any other file in the container, even if owned by the root user inside the container. It does not allow to directly escape the container, though being a privileged container means that a lot of security features are disabled when running the container. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CVSS Scores

version 3.1