CVE-2021-34855 Information disclosure in Desktop
Local attackers can disclose sensitive information via uninitialized memory in Parallels Desktop, potentially aiding privilege escalation to the hypervisor.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-34855?
CVE-2021-34855 is a medium-severity vulnerability in Parallels Parallels Desktop, published on 25 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
This vulnerability allows local attackers to disclose sensitive information on affected installations of Parallels Desktop 16.1.3 (49160). 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 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-13592.
Weakness: CWE-908
Which versions are affected by CVE-2021-34855?
It affects 1 product.
Products include Parallels Parallels Desktop.
How do I fix CVE-2021-34855?
No fix has been published for CVE-2021-34855 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-34855 being exploited?
There is no known exploitation of CVE-2021-34855 in the wild and no public exploit code.
Other vulnerabilities in Parallels Parallels Desktop
Sources
Also known as GHSA-jc9r-34fj-74j2.