CVE-2021-31429 : Exploit Details and Defense Strategies

This article provides detailed information about CVE-2021-31429, a vulnerability found in Parallels Desktop 15.1.5-47309 that allows local attackers to escalate privileges. Understand the impact, technical details, and mitigation strategies associated with this CVE.

Understanding CVE-2021-31429

CVE-2021-31429 is a critical vulnerability in Parallels Desktop 15.1.5-47309 that enables local attackers to elevate their privileges on the affected system.

What is CVE-2021-31429?

CVE-2021-31429 is a heap-based buffer overflow vulnerability that exists within the IDE virtual device of Parallels Desktop. It arises due to improper validation of user-supplied data length, allowing attackers to execute arbitrary code in the hypervisor's context.

The Impact of CVE-2021-31429

The vulnerability has a CVSS v3.0 base score of 8.2, indicating a high severity level. Attackers with local access can exploit this issue to escalate their privileges, leading to confidentiality, integrity, and availability impacts on the affected system.

Technical Details of CVE-2021-31429

Learn more about the specific details of the CVE, including the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The flaw in the IDE virtual device of Parallels Desktop results from the lack of proper validation of user-supplied data length, leading to a heap-based buffer overflow.

Affected Systems and Versions

Parallels Desktop 15.1.5-47309 is the specific version affected by CVE-2021-31429. Ensure that your system is updated to mitigate this vulnerability.

Exploitation Mechanism

Attackers must first execute high-privileged code on the target guest system to exploit this vulnerability. Once achieved, they can escalate privileges and run arbitrary code in the hypervisor's context.

Mitigation and Prevention

Discover the necessary steps to secure your system from CVE-2021-31429 and prevent potential exploitation.

Immediate Steps to Take

Immediately apply patches or security updates provided by Parallels to remediate this vulnerability and enhance system security.

Long-Term Security Practices

Implement strong security practices, such as least privilege access and regular security training, to minimize the risk of future attacks.

Patching and Updates

Regularly monitor for security advisories and apply patches promptly to address emerging vulnerabilities and protect your systems.