Privilege escalation in Intel Processor Microcode Package for Linux

1) Improper isolation or compartmentalization

EUVDB-ID: #VU96257

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-42667

CWE-ID: CWE-653 - Improper isolation or compartmentalization

Exploit availability: No

Description

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

The vulnerability exists due to improper isolation in the Intel Core Ultra Processor stream cache mechanism. A local user can execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Intel Processor Microcode Package for Linux: 20190312 - 20240531

External links

http://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01038.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.