CVE-2021-34856 Explained : Impact and Mitigation
Understand the CVE-2021-34856 affecting Parallels Desktop 16.1.3 (49160). Learn about the impact, technical details, and mitigation strategies for this local privilege escalation vulnerability.
This CVE-2021-34856 article provides insights into a vulnerability affecting Parallels Desktop 16.1.3 (49160) that allows local attackers to escalate privileges. Understand the description, impact, technical details, and mitigation strategies of this CVE.
Understanding CVE-2021-34856
CVE-2021-34856 is a vulnerability in Parallels Desktop 16.1.3 (49160) that enables local attackers to elevate their privileges on the target system. The flaw exists within the virtio-gpu virtual device.
What is CVE-2021-34856?
This vulnerability in Parallels Desktop 16.1.3 (49160) permits local attackers to escalate privileges by exploiting a memory corruption issue resulting from inadequate validation of user-supplied data.
The Impact of CVE-2021-34856
The impact of CVE-2021-34856 is rated as high, with confidentiality, integrity, and availability all being severely affected. An attacker can execute arbitrary code in the hypervisor context.
Technical Details of CVE-2021-34856
Get detailed technical insights about CVE-2021-34856 below:
Vulnerability Description
The vulnerability allows attackers to execute high-privileged code after gaining access to the target guest system. The flaw lies within the virtio-gpu virtual device.
Affected Systems and Versions
Parallels Desktop 16.1.3 (49160) is the specific version impacted by this vulnerability.
Exploitation Mechanism
Attackers need the ability to run high-privileged code on the target system to exploit this vulnerability effectively.
Mitigation and Prevention
Learn how to mitigate and prevent CVE-2021-34856 below:
Immediate Steps to Take
Users should ensure all systems are updated and apply the recommended security patches immediately.
Long-Term Security Practices
Implementing strong access controls, regular security updates, and monitoring for unauthorized activities are essential for long-term security.
Patching and Updates
Regularly check for security updates from Parallels and apply them promptly to protect systems from potential exploits.