Incorrect Default Permissions Affecting coreos-installer package, versions <0:0.10.0-2.rhaos4.9.el8


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.23% (14th percentile)

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  • Snyk IDSNYK-RHEL8-COREOSINSTALLER-4405147
  • published2 Nov 2021
  • disclosed7 Jul 2021

Introduced: 7 Jul 2021

CVE-2021-3917  (opens in a new tab)
CWE-276  (opens in a new tab)

How to fix?

Upgrade RHEL:8 coreos-installer to version 0:0.10.0-2.rhaos4.9.el8 or higher.
This issue was patched in RHSA-2021:3758.

NVD Description

Note: Versions mentioned in the description apply only to the upstream coreos-installer package and not the coreos-installer package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

A flaw was found in the coreos-installer, where it writes the Ignition config to the target system with world-readable access permissions. This flaw allows a local attacker to have read access to potentially sensitive data. The highest threat from this vulnerability is to confidentiality.

CVSS Base Scores

version 3.1