CVE-2020-17393 : Security Advisory and Response

This vulnerability in Parallels Desktop 15.1.3-47255 allows local attackers to disclose information by exploiting a flaw in the prl_hypervisor kext. The lack of proper validation of user-supplied data can lead to arbitrary code execution in the kernel.

Understanding CVE-2020-17393

This CVE involves a vulnerability in Parallels Desktop 15.1.3-47255 that can be exploited by local attackers to disclose sensitive information.

What is CVE-2020-17393?

CVE-2020-17393 is a security vulnerability in Parallels Desktop 15.1.3-47255 that enables local attackers to reveal information on affected installations. The flaw exists within the prl_hypervisor kext, allowing attackers to execute arbitrary code in the kernel.

The Impact of CVE-2020-17393

CVSS Base Score: 6.5 (Medium Severity)
Attack Vector: Local
Confidentiality Impact: High
Integrity Impact: None
Privileges Required: Low
User Interaction: None
Scope: Changed
Attack Complexity: Low
Availability Impact: None

Technical Details of CVE-2020-17393

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability arises from the lack of proper validation of user-supplied data, leading to a pointer leak in the prl_hypervisor kext.

Affected Systems and Versions

Affected Product: Desktop
Vendor: Parallels
Affected Version: 15.1.3-47255

Exploitation Mechanism

To exploit this vulnerability, an attacker must first execute low-privileged code on the target system. By leveraging this flaw along with other vulnerabilities, attackers can execute arbitrary code in the kernel.

Mitigation and Prevention

Protecting systems from CVE-2020-17393 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by Parallels promptly.
Monitor for any unusual activities on the system.

Long-Term Security Practices

Implement the principle of least privilege to restrict access.
Regularly update and patch software to prevent vulnerabilities.

Patching and Updates

Stay informed about security updates from Parallels.
Ensure all systems are up to date with the latest patches and fixes.