ZDI-21-434: Parallels Desktop OTG Heap-based Buffer Overflow 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 Open Tools Gate component. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor.
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-21-434?
The severity of ZDI-21-434 is classified as high due to its potential for privilege escalation.
How do I fix ZDI-21-434?
To fix ZDI-21-434, ensure that you are using the latest version of Parallels Desktop, as updates often include security patches.
Who is affected by ZDI-21-434?
ZDI-21-434 affects users of Parallels Desktop for Mac who have not applied the necessary security updates.
What type of vulnerability is ZDI-21-434?
ZDI-21-434 is a privilege escalation vulnerability that allows local attackers to gain higher-level access on the system.
Can ZDI-21-434 be exploited remotely?
No, ZDI-21-434 cannot be exploited remotely; the attacker must have local access to the vulnerable system.