CVE-2021-45467 : Vulnerability Insights and Analysis

CVE-2021-45467 is a vulnerability found in CWP (Control Web Panel or CentOS Web Panel) before version 0.9.8.1107. An unauthenticated attacker can exploit this vulnerability to register an arbitrary API key using %00 bytes in the /user/loader.php script. This could lead to unauthorized access and potential remote code execution.

Understanding CVE-2021-45467

What is CVE-2021-45467?

In CWP before version 0.9.8.1107, an attacker can manipulate the /user/loader.php script using %00 bytes to inject an arbitrary API key, potentially leading to a compromise of the system.

The Impact of CVE-2021-45467

Exploiting this vulnerability could result in unauthorized access and potentially remote code execution on the affected system.

Technical Details of CVE-2021-45467

Vulnerability Description

The vulnerability allows an unauthenticated attacker to manipulate the /user/loader.php script to register a forged API key using %00 bytes.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions Affected: All versions before 0.9.8.1107

Exploitation Mechanism

By sending specially crafted requests to /user/loader.php with %00 bytes, attackers can register an unauthorized API key and potentially execute commands on the system.

Mitigation and Prevention

Immediate Steps to Take

Update CWP to version 0.9.8.1107 or later to patch the vulnerability.
Monitor for any unauthorized API key registrations and suspicious activities.

Long-Term Security Practices

Implement proper input validation to prevent injection attacks.
Regularly audit and review system logs for unusual activities.

Patching and Updates

Regularly check for updates and security advisories for CWP.
Apply patches and updates promptly to mitigate known vulnerabilities.