CVE-2023-40547

A remote code execution vulnerability was found in Shim. The Shim boot support trusts attacker-controlled values when parsing an HTTP response. This flaw allows an attacker to craft a specific malicious HTTP request, leading to a completely controlled out-of-bounds write primitive and complete system compromise. This flaw is only exploitable during the early boot phase, an attacker needs to perform a Man-in-the-Middle or compromise the boot server to be able to exploit this vulnerability successfully.

• CVE ID
• CVE-2023-40547

• Assigner
• redhat

• Vulnerability Status
• PUBLISHED

• Published Version
• 2024-01-25T15:54:23.102Z

• Last Modified Date
• 2024-05-08T08:21:56.201Z