Incomplete Blacklist Affecting shim-ia32 package, versions <0:15.4-2.el8_5.2.rocky


Severity

Recommended
medium

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.05% (17th percentile)

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  • Snyk IDSNYK-ROCKY8-SHIMIA32-3215411
  • published5 Jan 2023
  • disclosed3 Mar 2021

Introduced: 3 Mar 2021

CVE-2020-14372  (opens in a new tab)
CWE-184  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 shim-ia32 to version 0:15.4-2.el8_5.2.rocky or higher.
This issue was patched in RLSA-2021:1734.

NVD Description

Note: Versions mentioned in the description apply only to the upstream shim-ia32 package and not the shim-ia32 package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

A flaw was found in grub2 in versions prior to 2.06, where it incorrectly enables the usage of the ACPI command when Secure Boot is enabled. This flaw allows an attacker with privileged access to craft a Secondary System Description Table (SSDT) containing code to overwrite the Linux kernel lockdown variable content directly into memory. The table is further loaded and executed by the kernel, defeating its Secure Boot lockdown and allowing the attacker to load unsigned code. The highest threat from this vulnerability is to data confidentiality and integrity, as well as system availability.

CVSS Base Scores

version 3.1