#VU87490 Information disclosure in Intel Processor Microcode Package for Linux - CVE-2023-38575

Vulnerability identifier: #VU87490

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-38575

CWE-ID: CWE-200

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Intel Processor Microcode Package for Linux
Hardware solutions / Firmware

Vendor: Intel

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to non-transparent sharing of return predictor targets between contexts in some Intel Processors. A local user can gain unauthorized access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Intel Processor Microcode Package for Linux: 20190312 - 20231114

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External links
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00982.html

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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.