Vulnerability identifier: #VU55533

Vulnerability risk: Low

CVSSv3.1: 7.1 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-34857

CWE-ID: CWE-787

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 compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input within the Toolgate component. A local administrator can trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://www.zerodayinitiative.com/advisories/ZDI-21-940/
http://kb.parallels.com/125013

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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.