CVE-2021-27242 – Parallels Desktop Toolgate Out-Of-Bounds Write Privilege Escalation Vulnerability

https://notcve.org/view.php?id=CVE-2021-27242

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.0.1-48919. 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 user-supplied data, which can result in a memory corruption condition. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the hypervisor. • https://kb.parallels.com/en/125013 https://www.zerodayinitiative.com/advisories/ZDI-21-209 • CWE-787: Out-of-bounds Write •