#VU73228 XML injection in Parallels Desktop - CVE-2023-27328

Vulnerability identifier: #VU73228

Vulnerability risk: Low

CVSSv4.0: 6.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2023-27328

CWE-ID: CWE-91

Exploitation vector: Local

Exploit availability: Yes

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

Vendor: Parallels

Description

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

The vulnerability exists due to improper input validation when processing XML data within the Toolgate component. A local user can pass specially crafted XML data to the application and gain elevated privileges on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Parallels Desktop: before 18.1.1

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External links
https://www.zerodayinitiative.com/advisories/ZDI-23-220/
https://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. However, proof of concept for this vulnerability is available.