CVE-2024-21820 Privilege escalation in Intel(R) Xeon(R) processor memory controller configurations when using Intel(R) SGX
A privileged local user can escalate privileges due to incorrect default permissions in Intel Xeon SGX memory controller configurations.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-21820?
CVE-2024-21820 is a high-severity vulnerability in Intel(R) Xeon(R) processor memory controller configurations when using Intel(R) SGX, published on 13 Nov 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Incorrect default permissions in some Intel(R) Xeon(R) processor memory controller configurations when using Intel(R) SGX may allow a privileged user to potentially enable escalation of privilege via local access.
Weakness: CWE-276
Which versions are affected by CVE-2024-21820?
How do I fix CVE-2024-21820?
Apply the vendor's patch.
Is CVE-2024-21820 being exploited?
There is no known exploitation of CVE-2024-21820 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2024-21820, DEBIAN-CVE-2024-21820, GHSA-643q-8gx3-hf55, UBUNTU-CVE-2024-21820.