CVE-2019-17435 : What You Need to Know

A Local Privilege Escalation vulnerability exists in the GlobalProtect Agent for Windows versions 5.0.3 and earlier, as well as versions 4.1.12 and earlier. This vulnerability targets the auto-update feature, allowing the modification of the GlobalProtect Agent MSI installer package on disk before installation.

Understanding CVE-2019-17435

This CVE affects the GlobalProtect Agent for Windows, developed by Palo Alto Networks, and poses a risk of local privilege escalation.

What is CVE-2019-17435?

The vulnerability in GlobalProtect Agent for Windows versions 5.0.3 and older, and versions 4.1.12 and older, enables attackers to escalate privileges locally by exploiting the auto-update feature.

The Impact of CVE-2019-17435

The vulnerability allows unauthorized users to elevate their privileges on the affected system, potentially leading to further compromise or unauthorized access.

Technical Details of CVE-2019-17435

This section provides more technical insights into the vulnerability.

Vulnerability Description

The flaw in the GlobalProtect Agent for Windows allows attackers to manipulate the MSI installer package during the auto-update process, leading to local privilege escalation.

Affected Systems and Versions

Product: GlobalProtect Agent for Windows
Vendor: Palo Alto Networks
Vulnerable Versions: 5.0.3 and earlier, 4.1.12 and earlier

Exploitation Mechanism

Attackers can exploit the vulnerability by tampering with the GlobalProtect Agent MSI installer package on disk before installation, leveraging the auto-update functionality.

Mitigation and Prevention

To address CVE-2019-17435, follow these mitigation strategies:

Immediate Steps to Take

Disable the auto-update feature in GlobalProtect Agent for Windows.
Monitor system logs for any suspicious activities or unauthorized privilege escalations.

Long-Term Security Practices

Regularly update the GlobalProtect Agent to the latest version to patch known vulnerabilities.
Implement the principle of least privilege to restrict user permissions and minimize the impact of potential privilege escalation attacks.

Patching and Updates

Apply security patches provided by Palo Alto Networks promptly to fix the vulnerability and enhance system security.