#VU60452 Improper locking in Intel Power Management Controller (PMC) - CVE-2021-0147

Vulnerability identifier: #VU60452

Vulnerability risk: Low

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

CVE-ID: CVE-2021-0147

CWE-ID: CWE-667

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Intel Power Management Controller (PMC)
Hardware solutions / Drivers

Vendor: Intel

Description

The vulnerability allows a local user to perform a denial of service attack (DoS) on the target system.

The vulnerability exists due to double-locking error. An authenticated local user can exploit this vulnerability to cause a deadlock, resulting in a denial of service condition.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Intel Power Management Controller (PMC): before pmc_fw_lbg_c1-21ww02a

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External links
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00470.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.