CVE-2023-27328: Parallels Desktop Toolgate XML Injection Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop. A...

Summary

Parallels Desktop Toolgate XML Injection Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop. An attacker must first obtain the ability to execute low-privileged code on the target guest system in o...

What to do

Update parallels parallels_desktop to version 18.1.1_\(53328\) or later.

Affected software

Vendor	Product	Affected versions
parallels	parallels_desktop	< 18.1.1_\(53328\) `cpe:2.3:a:parallels:parallels_desktop::::::macos::*`

Original advisory text

Parallels Desktop Toolgate XML Injection Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop. A...

Parallels Desktop Toolgate XML Injection Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop. An attacker must first obtain the ability to execute low-privileged code on the target guest system in order to exploit this vulnerability.

The specific flaw exists within the Toolgate component. The issue results from the lack of proper validation of a user-supplied string before using it to construct an XML document. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-19187.

References

https://kb.parallels.com/125013 Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-23-220/ Third Party Advisory