CVE-2020-13167 : Vulnerability Insights and Analysis

Netsweeper through 6.4.3 allows unauthenticated remote code execution due to a vulnerability in webadmin/tools/unixlogin.php, enabling the injection of shell metacharacters.

Understanding CVE-2020-13167

This CVE identifies a critical security issue in Netsweeper versions up to 6.4.3, potentially leading to remote code execution.

What is CVE-2020-13167?

The vulnerability in Netsweeper allows attackers to execute commands remotely without authentication by exploiting a specific file that accepts user-supplied parameters.

The Impact of CVE-2020-13167

The vulnerability permits unauthenticated remote code execution, posing a severe risk to the security and integrity of affected systems.

Technical Details of CVE-2020-13167

Netsweeper through version 6.4.3 is susceptible to unauthenticated remote code execution due to a flaw in the unixlogin.php file.

Vulnerability Description

The issue arises from the ability to launch a command line with user-controlled parameters, facilitating the injection of malicious shell metacharacters.

Affected Systems and Versions

Product: Netsweeper
Vendor: N/A
Versions: Up to 6.4.3

Exploitation Mechanism

Attackers can exploit the vulnerability by manipulating certain Referer headers to execute commands remotely without authentication.

Mitigation and Prevention

It is crucial to take immediate action to mitigate the risks associated with CVE-2020-13167.

Immediate Steps to Take

Apply security patches or updates provided by Netsweeper promptly.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify vulnerabilities.
Educate users and administrators about safe computing practices and the importance of security updates.

Patching and Updates

Ensure that the affected Netsweeper systems are updated with the latest patches to address the vulnerability.