CVE-2021-34868 : Security Advisory and Response

This CVE-2021-34868 involves a vulnerability in Parallels Desktop version 16.1.3-49160 that allows local attackers to escalate privileges. The attacker needs to execute low-privileged code on the target system to exploit this flaw within the Toolgate component, resulting from improper user-supplied data validation.

Understanding CVE-2021-34868

This section delves into the details of the CVE-2021-34868 vulnerability in Parallels Desktop version 16.1.3-49160.

What is CVE-2021-34868?

CVE-2021-34868 is a security loophole in Parallels Desktop that permits local attackers to enhance their privileges on affected installations. By executing low-privileged code on the target system, this vulnerability can be exploited to escalate privileges.

The Impact of CVE-2021-34868

The impact of CVE-2021-34868 is deemed high, with a CVSS base score of 7.8. It can lead to a local attacker gaining escalated privileges and executing arbitrary code within the hypervisor's context.

Technical Details of CVE-2021-34868

In this section, we explore the technical aspects of CVE-2021-34868.

Vulnerability Description

The vulnerability stems from the lack of proper validation of user-supplied data, causing uncontrolled memory allocation and enabling privilege escalation for attackers.

Affected Systems and Versions

Parallels Desktop version 16.1.3-49160 on the desktop platform is affected by this vulnerability, allowing local attackers to exploit the flaw.

Exploitation Mechanism

To exploit CVE-2021-34868, an attacker must execute low-privileged code on the target system, leveraging the uncontrolled memory allocation flaw to escalate privileges and execute arbitrary code.

Mitigation and Prevention

This section outlines the steps to mitigate and prevent potential attacks exploiting CVE-2021-34868.

Immediate Steps to Take

Users are advised to apply security updates promptly, follow best security practices, and limit access to vulnerable systems to trusted entities to mitigate the risk of exploitation.

Long-Term Security Practices

Implementing robust security protocols, conducting regular security assessments, and monitoring for unauthorized access can help prevent similar privilege escalation vulnerabilities.

Patching and Updates

Users should regularly check for and apply security patches released by Parallels to address vulnerabilities and enhance system security.