Incomplete Blacklist Affecting shim-ia32 package, versions <0:15.4-2.el8_1


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-RHEL8-SHIMIA32-3979500
  • published26 Jul 2021
  • disclosed2 Mar 2021

Introduced: 2 Mar 2021

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

How to fix?

Upgrade RHEL:8 shim-ia32 to version 0:15.4-2.el8_1 or higher.
This issue was patched in RHSA-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 RHEL. See How to fix? for RHEL: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 Scores

version 3.1