Incorrect Default Permissions Affecting grub2-pc-modules package, versions <1:2.02-123.0.1.el8


Severity

Recommended
0.0
low
0
10

Based on Oracle Linux security rating.

Threat Intelligence

Exploit Maturity
Not Defined
EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-ORACLE8-GRUB2PCMODULES-2833140
  • published18 May 2022
  • disclosed10 Mar 2022

Introduced: 10 Mar 2022

CVE-2021-3981  (opens in a new tab)
CWE-276  (opens in a new tab)

How to fix?

Upgrade Oracle:8 grub2-pc-modules to version 1:2.02-123.0.1.el8 or higher.
This issue was patched in ELSA-2022-2110.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2-pc-modules package and not the grub2-pc-modules package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

A flaw in grub2 was found where its configuration file, known as grub.cfg, is being created with the wrong permission set allowing non privileged users to read its content. This represents a low severity confidentiality issue, as those users can eventually read any encrypted passwords present in grub.cfg. This flaw affects grub2 2.06 and previous versions. This issue has been fixed in grub upstream but no version with the fix is currently released.

CVSS Scores

version 3.1