Privilege Defined With Unsafe Actions Affecting grub2-efi-x64 package, versions <1:2.02-78.el8_1.1


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.04% (6th percentile)

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  • Snyk ID SNYK-CENTOS8-GRUB2EFIX64-2020828
  • published 26 Jul 2021
  • disclosed 25 Nov 2019

How to fix?

Upgrade Centos:8 grub2-efi-x64 to version 1:2.02-78.el8_1.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2-efi-x64 package and not the grub2-efi-x64 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. A local attacker could run this utility under resource pressure (for example by setting RLIMIT), causing grub2 configuration files to be truncated and leaving the system unbootable on subsequent reboots.

CVSS Scores

version 3.1
Expand this section

NVD

5.5 medium
  • 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)
    High