CVE-2021-3052 : Vulnerability Insights and Analysis

A reflected cross-site scripting (XSS) vulnerability in the Palo Alto Network PAN-OS web interface allows an authenticated network-based attacker to deceive another authenticated PAN-OS administrator into clicking on a specially crafted link, leading to arbitrary actions within the web interface.

Understanding CVE-2021-3052

This vulnerability impacts PAN-OS versions 8.1, 9.0, 9.1, and 10.0, excluding specific updated versions, but does not affect Prisma Access.

What is CVE-2021-3052?

CVE-2021-3052 is a reflected cross-site scripting (XSS) vulnerability in PAN-OS web interface which poses a moderate to high risk.

The Impact of CVE-2021-3052

The vulnerability has a CVSS base score of 8.0, indicating high severity with potential for unauthorized actions by authenticated attackers.

Technical Details of CVE-2021-3052

This vulnerability requires an attacker to be authenticated. Mitigation involves implementing security best practices for the PAN-OS web interface.

Vulnerability Description

A reflected XSS flaw in PAN-OS web interface allows attackers to execute arbitrary actions by tricking authenticated administrators.

Affected Systems and Versions

PAN-OS versions 8.1.20, 9.0.14, 9.1.10, and 10.0.2 are unaffected. Versions prior to these are vulnerable.

Exploitation Mechanism

An attacker with authenticated access can manipulate an admin into clicking on a malicious link, initiating unauthorized operations.

Mitigation and Prevention

To mitigate the impact of CVE-2021-3052, follow security best practices and ensure you are using the updated PAN-OS versions.

Immediate Steps to Take

Review and implement the Best Practices for Securing Administrative Access in the PAN-OS technical documentation.

Long-Term Security Practices

Regularly update and patch PAN-OS installations to stay protected against potential vulnerabilities.

Patching and Updates

Ensure your PAN-OS is updated to versions 8.1.20, 9.0.14, 9.1.10, or 10.0.2, or newer.