CVE-2023-30806 Explained : Impact and Mitigation

A detailed analysis of the CVE-2023-30806 vulnerability affecting Sangfor's Next-Gen Application Firewall version 8.0.17.

Understanding CVE-2023-30806

This section delves into the specifics of the CVE-2023-30806 vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2023-30806?

The Sangfor Next-Gen Application Firewall version 8.0.17 is susceptible to an operating system command injection vulnerability. An attacker can exploit this flaw by sending a crafted HTTP POST request to the /cgi-bin/login.cgi endpoint.

The Impact of CVE-2023-30806

The vulnerability poses a critical threat, allowing a remote and unauthenticated attacker to execute arbitrary commands due to mishandling of shell meta-characters in the PHPSESSID cookie.

Technical Details of CVE-2023-30806

This section outlines the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The Sangfor NGAF version NGAF8.0.17 is vulnerable to an operating system command injection attack, enabling remote attackers to execute arbitrary commands.

Affected Systems and Versions

Platform: Linux
Product: Net-Gen Application Firewall
Vendor: Sangfor
Version: 8.0.17

Exploitation Mechanism

An attacker can leverage the vulnerability by sending a malicious HTTP POST request to the /cgi-bin/login.cgi endpoint.

Mitigation and Prevention

In this section, we discuss the steps to take immediately, long-term security practices, and the importance of patching and updates.

Immediate Steps to Take

Organizations using Sangfor NGAF should apply security patches immediately and restrict access to vulnerable endpoints.

Long-Term Security Practices

Implement strong network segregation, regularly monitor and test network security measures, and educate employees on cybersecurity best practices.

Patching and Updates

Stay vigilant for security updates from Sangfor and promptly apply patches to mitigate the risk of exploitation.