CVE-2020-8871 Memory corruption in Desktop
Local attackers with guest code execution can escalate privileges to the hypervisor via a buffer overflow in the VGA virtual device.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-8871?
CVE-2020-8871 is a high-severity memory corruption vulnerability in Parallels Parallels Desktop, published on 23 Mar 2020. 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 15.1.0-47107 . 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 VGA virtual device. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the hypervisor. Was ZDI-CAN-9403.
Weakness: CWE-787
Which versions are affected by CVE-2020-8871?
It affects 1 product.
Products include Parallels Parallels Desktop.
How do I fix CVE-2020-8871?
No fix has been published for CVE-2020-8871 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-8871 being exploited?
There is no known exploitation of CVE-2020-8871 in the wild and no public exploit code.
Other vulnerabilities in Parallels Parallels Desktop
Sources
Also known as GHSA-rmp8-cm96-7qjh.