CVE-2020-8876 Explained : Impact and Mitigation

This vulnerability allows local attackers to disclose information on affected installations of Parallels Desktop 15.1.2-47123. An attacker must first obtain the ability to execute low-privileged code on the target system to exploit this vulnerability. The flaw exists within the IOCTL handler due to the lack of proper validation of user-supplied data, potentially leading to arbitrary code execution in the kernel.

Understanding CVE-2020-8876

This CVE affects Parallels Desktop version 15.1.2-47123.

What is CVE-2020-8876?

CVE-2020-8876 is a vulnerability that allows local attackers to access information on affected Parallels Desktop installations. By exploiting this flaw, attackers can execute arbitrary code in the kernel.

The Impact of CVE-2020-8876

CVSS Base Score: 6.5 (Medium Severity)
Attack Vector: Local
Confidentiality Impact: High
Privileges Required: Low
Scope: Changed

Technical Details of CVE-2020-8876

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The vulnerability stems from improper validation of user-supplied data within the IOCTL handler, allowing attackers to read past the end of an allocated buffer.

Affected Systems and Versions

Affected Product: Parallels Desktop
Affected Version: 15.1.2-47123

Exploitation Mechanism

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

Mitigation and Prevention

Protecting systems from CVE-2020-8876 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches promptly
Monitor and restrict low-privileged code execution

Long-Term Security Practices

Implement proper input validation mechanisms
Regularly update and patch software

Patching and Updates

Ensure that all systems running Parallels Desktop are updated with the latest security patches to mitigate the risk of exploitation.