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CVE-2023-40549

Medium

Description

An out-of-bounds read flaw was found in Shim due to the lack of proper boundary verification during the load of a PE binary. This flaw allows an attacker to load a crafted PE binary, triggering the issue and crashing Shim, resulting in a denial of service.

SeverityMedium
CVSS6.2
Exploit probability—
ProductRedhat Shim
PublishedJan 29, 2024
First seenJan 29, 2024
Weakness typeCWE-125Out-of-bounds read

How to fix

Update
  • redhat shim15.8 or later
Vendor advisories

Affected products

ProductAffected versionsFixed in
redhat shimv < 15.815.8
fedoraproject fedora39—
redhat enterprise_linux8.0, 9.0—

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