CVE-2023-40547
CVSS 3.1 Score 8.3 of 10 (high)
Details
Published Jan 25, 2024
Updated: Jun 10, 2024
CWE ID 787
CWE ID 346
Summary
CVE-2023-40547 is a remote code execution vulnerability affecting the Shim boot support. The flaw arises from the Shim trusting attacker-controlled values during HTTP response parsing, enabling an attacker to execute out-of-bounds writes. This results in a completely controlled system compromise. Exploitation is limited to the early boot phase; an attacker can only exploit this vulnerability by performing a Man-in-the-Middle attack or compromising the boot server.
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Affected Products
- Red Hat Enterprise Linux
Affected Vendors
- Red Hat