CVE-2021-34986 Race condition in Desktop
Local attackers can escalate privileges to root by exploiting a race condition in the Parallels Service via symbolic link abuse.
- 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-2021-34986?
CVE-2021-34986 is a high-severity vulnerability in Parallels Parallels Desktop, published on 15 Jul 2022. 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 escalate privileges on affected installations of Parallels Desktop 16.5.0 (49183). An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the Parallels Service. By creating a symbolic link, an attacker can abuse the service to execute a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root. Was ZDI-CAN-13932.
Weakness: CWE-367
Which versions are affected by CVE-2021-34986?
It affects 1 product.
Products include Parallels Parallels Desktop.
How do I fix CVE-2021-34986?
No fix has been published for CVE-2021-34986 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-34986 being exploited?
There is no known exploitation of CVE-2021-34986 in the wild and no public exploit code.
Other vulnerabilities in Parallels Parallels Desktop
Sources
Also known as GHSA-6qf9-3c85-x94q.