Out-of-bounds Write Affecting shim-unsigned-aarch64 package, versions <0:15-7.el8.1.1


Severity

Recommended
0.0
medium
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
1.01% (60th percentile)

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  • Snyk IDSNYK-ROCKY8-SHIMUNSIGNEDAARCH64-3215484
  • published5 Jan 2023
  • disclosed3 Mar 2021

Introduced: 3 Mar 2021

CVE-2021-20225  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 shim-unsigned-aarch64 to version 0:15-7.el8.1.1 or higher.
This issue was patched in RLSA-2021:1734.

NVD Description

Note: Versions mentioned in the description apply only to the upstream shim-unsigned-aarch64 package and not the shim-unsigned-aarch64 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. The option parser allows an attacker to write past the end of a heap-allocated buffer by calling certain commands with a large number of specific short forms of options. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CVSS Base Scores

version 3.1