ZDI-21-209: Parallels Desktop Toolgate Out-Of-Bounds Write 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 Toolgate component. The issue results from the lack of proper validation of user-supplied data, which can result in a memory corruption condition. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the hypervisor.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Parallels Desktop for Mac |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of ZDI-21-209?
The severity of ZDI-21-209 is high due to its potential for local privilege escalation.
How do I fix ZDI-21-209?
To fix ZDI-21-209, update Parallels Desktop to the latest version as recommended by the vendor.
Who is affected by ZDI-21-209?
ZDI-21-209 affects users of Parallels Desktop for Mac installations.
What type of attack does ZDI-21-209 enable?
ZDI-21-209 enables local attackers to escalate privileges on compromised systems.
What must an attacker do to exploit ZDI-21-209?
To exploit ZDI-21-209, an attacker must first execute low-privileged code on the target guest system.
- agent/references
- agent/type
- agent/softwarecombine
- agent/severity
- agent/title
- agent/description
- agent/event
- agent/source
- agent/tags
- collector/zdi-advisory
- source/ZDI
- alias/ZDI-21-209
- alias/ZDI-CAN-11926
- alias/CVE-2021-27242
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/parallels
- canonical/parallels desktop for mac