CVE-2021-31423: Parallels Desktop Toolgate Uninitialized Memory Information Disclosure Vulnerability
This vulnerability allows local attackers to disclose sensitive information on affected installations of Parallels Desktop 15.1.5-47309. An attacker must first obtain the ability to execute high-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 initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-12528.
Other sources
This vulnerability allows local attackers to disclose sensitive information on affected installations of Parallels Desktop. An attacker must first obtain the ability to execute high-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 initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the hypervisor.
Affected Software
Event History
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2021-31423.
What is the title of the vulnerability?
The title of the vulnerability is Parallels Desktop Toolgate Uninitialized Memory Information Disclosure Vulnerability.
What software is affected by this vulnerability?
Parallels Desktop version 15.1.5-47309 is affected by this vulnerability.
What is the severity of CVE-2021-31423?
The severity of CVE-2021-31423 is medium.
How can I fix this vulnerability?
To fix this vulnerability, update Parallels Desktop to a version that is not affected.