CVE-2020-11635 : What You Need to Know

The Zscaler Client Connector prior to version 3.1.0 is vulnerable to an issue that could allow a local adversary to execute code with system privileges or perform unauthorized actions.

Understanding CVE-2020-11635

This CVE identifies an improper privilege management vulnerability in the Zscaler Client Connector for Windows.

What is CVE-2020-11635?

The vulnerability in Zscaler Client Connector before version 3.1.0 lacks proper validation of RPC clients, enabling a local attacker to gain elevated privileges.

The Impact of CVE-2020-11635

The vulnerability could lead to unauthorized code execution with system-level permissions or the ability to perform actions beyond the attacker's privileges.

Technical Details of CVE-2020-11635

The technical aspects of this CVE are as follows:

Vulnerability Description

The Zscaler Client Connector for Windows, versions prior to 3.1.0, fails to adequately validate RPC clients, creating an opportunity for local attackers to exploit the system.

Affected Systems and Versions

Product: Zscaler Client Connector for Windows
Vendor: Not applicable
Versions Affected: < 3.1.0

Exploitation Mechanism

The vulnerability allows a local adversary to execute malicious code with system privileges or perform actions they are not authorized to do.

Mitigation and Prevention

To address CVE-2020-11635, consider the following steps:

Immediate Steps to Take

Update Zscaler Client Connector to version 3.1.0 or later to mitigate the vulnerability.
Monitor system logs for any suspicious activities that could indicate exploitation.

Long-Term Security Practices

Implement the principle of least privilege to restrict user access and permissions.
Conduct regular security audits and assessments to identify and remediate vulnerabilities.

Patching and Updates

Stay informed about security advisories from Zscaler and promptly apply patches and updates to ensure system security.