CVE-2020-17401 Explained : Impact and Mitigation

A vulnerability in Parallels Desktop 15.1.4 allows local attackers to disclose sensitive information by exploiting a flaw in the VGA virtual device.

Understanding CVE-2020-17401

This CVE involves improper validation of user-supplied data, leading to a read past the end of an allocated array, potentially enabling privilege escalation.

What is CVE-2020-17401?

This vulnerability in Parallels Desktop 15.1.4 permits local attackers to access sensitive data by executing high-privileged code on the target guest system.

The Impact of CVE-2020-17401

CVSS Base Score: 6 (Medium Severity)
Confidentiality Impact: High
Privileges Required: High
Scope: Changed
Attack Vector: Local
User Interaction: None
Vector String: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

Technical Details of CVE-2020-17401

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The flaw arises from the lack of proper validation of user-supplied data, allowing attackers to read past the end of an allocated array.

Affected Systems and Versions

Affected Product: Parallels Desktop
Affected Version: 15.1.4

Exploitation Mechanism

Attackers need the ability to execute high-privileged code on the target guest system to exploit this vulnerability.

Mitigation and Prevention

Protect your systems from CVE-2020-17401 with the following steps:

Immediate Steps to Take

Update Parallels Desktop to a non-vulnerable version.
Monitor system logs for any suspicious activities.

Long-Term Security Practices

Implement the principle of least privilege to restrict access.
Regularly audit and update security configurations.

Patching and Updates

Apply security patches provided by Parallels promptly.