CVE-2024-23918

Root

Cause

An improper conditions check vulnerability exists in certain Intel Xeon processor memory controller configurations when Intel Software Guard Extensions (SGX) is enabled [1]. This flaw arises from inadequate validation of specific conditions within the memory controller, potentially allowing a privileged user to bypass security boundaries enforced by SGX.

Exploitation

Exploitation requires local access and elevated privileges (e.g., administrator or root) on a system using an affected Intel Xeon processor with a vulnerable memory controller configuration and Intel SGX enabled [1]. The attacker must have the ability to interact with the memory controller, which could be achieved through a custom driver or privileged software.

Impact

Successful exploitation could allow an attacker with existing elevated privileges to further escalate their privileges, potentially gaining complete control over the SGX enclave and the system's secure memory regions [1]. This could lead to the disclosure of sensitive data processed within enclaves or the execution of arbitrary code within the trusted execution environment.

Mitigation

Intel has released a microcode update to address this vulnerability [1]. Users and system administrators should apply the latest BIOS/firmware updates from their system manufacturer to mitigate the risk. There are no known workarounds, and Intel recommends patching affected systems as soon as possible [1].