Privilege escalation in 4th Gen Intel Xeon processors

1) Improper access control

EUVDB-ID: #VU87486

Risk: Low

CVSSv3.1: 6.9 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-32666

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to improper access restrictions within the on-chip debug and test interface when using Intel SGX or Intel TDX. A local privileged user can bypass implemented security restrictions and escalate privileges on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

4th Generation Intel Xeon Scalable Processors: All versions

4th Generation Intel Xeon Platinum processors: All versions

4th Generation Intel Xeon Gold Processors: All versions

4th Generation Intel Xeon Silver Processors: All versions

4th Generation Intel Xeon Bronze Processors: All versions

Intel Xeon CPU Max Series processors (High Bandwidth Memory HBM): All versions

External links

http://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00986.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.