CVE-2021-3057 : Vulnerability Insights and Analysis

A stack-based buffer overflow vulnerability in Palo Alto Networks' GlobalProtect app allows a man-in-the-middle attacker to disrupt system processes and potentially execute arbitrary code with SYSTEM privileges. The impacted versions are GlobalProtect app 5.1.9 on Windows, 5.2.8 on Windows and Universal Windows Platform, and 5.3.1 on Linux.

Understanding CVE-2021-3057

This CVE addresses a critical buffer overflow vulnerability in Palo Alto Networks' GlobalProtect app, impacting various versions across Windows, Linux, and Universal Windows Platform.

What is CVE-2021-3057?

A stack-based buffer overflow vulnerability in the Palo Alto Networks GlobalProtect app allows attackers to disrupt system processes and execute arbitrary code, potentially gaining SYSTEM privileges.

The Impact of CVE-2021-3057

The vulnerability has a CVSS base score of 8.1 (High severity) with a high impact on confidentiality, integrity, and availability of affected systems. An attacker can exploit this issue to gain control over the target system.

Technical Details of CVE-2021-3057

This section provides insights into the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

A stack-based buffer overflow vulnerability exists in the GlobalProtect app, providing a gateway for malicious actors to execute unauthorized code and disrupt system processes.

Affected Systems and Versions

The vulnerability affects GlobalProtect app 5.1.9 on Windows, 5.2.8 on Windows and Universal Windows Platform, and 5.3.1 on Linux, and all prior versions.

Exploitation Mechanism

Exploiting this issue requires an attacker to be in a man-in-the-middle position to intercept and manipulate traffic between a victim's system and the GlobalProtect app.

Mitigation and Prevention

To safeguard systems against CVE-2021-3057, immediate steps need to be taken along with long-term security practices and regular patching.

Immediate Steps to Take

Users should update their GlobalProtect app to version 5.1.9 on Windows, 5.2.8 on Windows and Universal Windows Platform, and 5.3.1 on Linux.

Long-Term Security Practices

Adopting secure coding practices, network segmentation, and regular security assessments are essential for maintaining robust cybersecurity posture.

Patching and Updates

Palo Alto Networks has released patches for the affected versions, including GlobalProtect app 5.1.9, 5.2.8, and 5.3.1.