Time-of-check Time-of-use (TOCTOU) Race Condition in Parallels Desktop - CVE-2020-8873

Vulnerability identifier: #VU26129

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2020-8873

CWE-ID:

Exploitation vector: Local access

Exploit availability: No public exploit available

Vendor: Parallels

Affected software:
Parallels Desktop

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

The vulnerability exists due to a lack of proper locking when performing operations on an object within the xHCI component. An local user can gain elevated privileges on the target system.

Install updates from vendor's website.

• https://www.zerodayinitiative.com/advisories/ZDI-20-294/