CVE-2023-40547 — Shim: rce in http boot support may lead to secure boot bypass
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 c…
Published: 2024-01-25 · CVSS: 8.3 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7