#VU52517 Time-of-check Time-of-use (TOCTOU) Race Condition in Parallels Desktop


Published: 2021-04-23

Vulnerability identifier: #VU52517

Vulnerability risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-31427

CWE-ID: CWE-367

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Parallels Desktop
Operating systems & Components / Operating system package or component

Vendor:

Description

The vulnerability allows a local user to gain access to sensitive information on the system.

The vulnerability exists due to the lack of proper locking when performing operations on an object within the Open Tools Gate component. A local administrator can gain access to sensitive information on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions


External links
http://www.zerodayinitiative.com/advisories/ZDI-21-435/
http://kb.parallels.com/en/125013


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.


Latest bulletins with this vulnerability