Out-of-bounds Write Affecting mokutil package, versions <0:15.6-1.0.7.el7


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.08% (36th percentile)

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  • Snyk IDSNYK-ORACLE7-MOKUTIL-2862650
  • published8 Jun 2022
  • disclosed20 Jul 2023

Introduced: 8 Jun 2022

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

How to fix?

Upgrade Oracle:7 mokutil to version 0:15.6-1.0.7.el7 or higher.
This issue was patched in ELSA-2022-9466.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mokutil package and not the mokutil package as distributed by Oracle. See How to fix? for Oracle:7 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 Base Scores

version 3.1