CVE-2021-31430 : What You Need to Know

This article provides detailed information about CVE-2021-31430, a vulnerability that allows local attackers to disclose sensitive information in Parallels Desktop 15.1.5-47309. The article covers what CVE-2021-31430 is, its impact, technical details, and mitigation steps.

Understanding CVE-2021-31430

CVE-2021-31430 is a vulnerability that affects Parallels Desktop 15.1.5-47309, allowing local attackers to expose sensitive information.

What is CVE-2021-31430?

CVE-2021-31430 is a vulnerability in Parallels Desktop 15.1.5-47309 that enables local attackers to uncover sensitive data by exploiting a flaw within the IDE virtual device.

The Impact of CVE-2021-31430

The vulnerability has a CVSS base score of 6 (Medium Severity) with high confidentiality impact, requiring high privileges for exploitation and resulting in a read past the end of an allocated buffer.

Technical Details of CVE-2021-31430

CVE-2021-31430 involves inadequate validation of user-supplied data within the IDE virtual device, enabling attackers to execute arbitrary code in the context of the hypervisor.

Vulnerability Description

The flaw allows local attackers to read sensitive information, potentially leading to privilege escalation and code execution.

Affected Systems and Versions

Parallels Desktop version 15.1.5-47309 is vulnerable to this exploit.

Exploitation Mechanism

Attackers need to execute high-privileged code on the target guest system to leverage the lack of validation and read past the buffer's end.

Mitigation and Prevention

Mitigating CVE-2021-31430 involves immediate actions and long-term security practices.

Immediate Steps to Take

Users should apply security patches, restrict guest system access, and monitor for suspicious activities.

Long-Term Security Practices

Regularly update Parallels Desktop, apply security best practices, and conduct security audits to prevent similar vulnerabilities.

Patching and Updates

Stay informed about security advisories, install security updates promptly, and follow vendor recommendations for securing Parallels Desktop.