NetSight
IP …
high8.3

CVE-2023-40547

A remote code execution vulnerability was found in Shim.

Impact

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.

Affected products

VendorProductAffected versions
RedhatShim
before 15.8
RedhatEnterprise Linux
Versions 7.0, 8.0, 9.0

Weakness classification

CWE-787CWE-346

References