Incomplete Cleanup Affecting grub2-tools-minimal package, versions <1:2.02-156.el8


Severity

Recommended
medium

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.05% (17th percentile)

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  • Snyk ID SNYK-CENTOS8-GRUB2TOOLSMINIMAL-6231337
  • published 7 Feb 2024
  • disclosed 6 Feb 2024

How to fix?

Upgrade Centos:8 grub2-tools-minimal to version 1:2.02-156.el8 or higher.

NVD Description

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

A flaw was found in the grub2-set-bootflag utility of grub2. After the fix of CVE-2019-14865, grub2-set-bootflag will create a temporary file with the new grubenv content and rename it to the original grubenv file. If the program is killed before the rename operation, the temporary file will not be removed and may fill the filesystem when invoked multiple times, resulting in a filesystem out of free inodes or blocks.

CVSS Scores

version 3.1
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NVD

3.3 low
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    Low
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Red Hat

3.3 low