CVE-2021-43350 : What You Need to Know

CVE-2021-43350, also known as the LDAP filter injection vulnerability in Traffic Ops, affects Apache Traffic Control. An unauthenticated user can exploit this issue to inject unsanitized content into the LDAP filter.

Understanding CVE-2021-43350

This CVE involves a critical security vulnerability that allows unauthorized users to manipulate the LDAP filter through specially-crafted requests.

What is CVE-2021-43350?

An unauthenticated user in Apache Traffic Control's Traffic Ops can inject unsanitized content into the LDAP filter via a crafted username request.

The Impact of CVE-2021-43350

It is rated as critical, indicating its severity and potential to cause significant harm if exploited.

Technical Details of CVE-2021-43350

This section delves into the specifics of the vulnerability.

Vulnerability Description

Vulnerability: LDAP filter injection in Traffic Ops.
The issue arises from unsanitized content injection via crafted username requests.

Affected Systems and Versions

Affected: Traffic Ops custom version less than 6.0.1.
Unaffected: Traffic Ops version 5.1.4.

Exploitation Mechanism

An unauthenticated user provides a specially-crafted username to the POST /login endpoint to modify the LDAP filter.

Mitigation and Prevention

Below are the steps to mitigate and prevent the exploitation of CVE-2021-43350.

Immediate Steps to Take

Upgrade affected systems to version 6.0.1 or newer.
Implement input validation mechanisms to sanitize user inputs.

Long-Term Security Practices

Conduct regular security audits and penetration testing.
Educate users on secure coding practices to prevent injection vulnerabilities.

Patching and Updates

Apply security patches provided by Apache Software Foundation promptly to address this vulnerability.