Out-of-bounds Write Affecting shim-x64 package, versions <0:15.6-1.el8.alma


Severity

Recommended
0.0
high
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.07% (35th 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-ALMALINUX8-SHIMX64-5626321
  • published28 May 2023
  • disclosed16 Jun 2022

Introduced: 16 Jun 2022

CVE-2022-28737  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 shim-x64 to version 0:15.6-1.el8.alma or higher.
This issue was patched in ALSA-2022:5095.

NVD Description

Note: Versions mentioned in the description apply only to the upstream shim-x64 package and not the shim-x64 package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

There's a possible overflow in handle_image() when shim tries to load and execute crafted EFI executables; The handle_image() function takes into account the SizeOfRawData field from each section to be loaded. An attacker can leverage this to perform out-of-bound writes into memory. Arbitrary code execution is not discarded in such scenario.

CVSS Scores

version 3.1