Privilege escalation in Intel Xeon processors

1) Security features bypass

EUVDB-ID: #VU87459

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-22655

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

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

The vulnerability exists due to a protection mechanism failure in some 3rd and 4th Generation Intel Xeon Processors when using Intel SGX or Intel TDX. A local user can execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

3rd Generation Intel Xeon Scalable Processors: All versions

Intel Xeon D Processors: All versions

4th Generation Intel Xeon Platinum processors: All versions

4th Generation Intel Xeon Gold Processors: All versions

4th Generation Intel Xeon Scalable 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-00960.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.