CVE-2021-46360 : What You Need to Know

This CVE record discusses an authenticated remote code execution vulnerability in Composr-CMS 10.0.39 and earlier versions, potentially allowing attackers to execute arbitrary code.

Understanding CVE-2021-46360

What is CVE-2021-46360?

This CVE-2021-46360 vulnerability involves authenticated remote code execution in Composr-CMS 10.0.39 and preceding versions. By uploading a PHP shell through /adminzone/index.php?page=admin-commandr, remote attackers can execute arbitrary code.

The Impact of CVE-2021-46360

This vulnerability could lead to severe consequences, such as unauthorized execution of malicious code on the affected system, compromising its security and integrity.

Technical Details of CVE-2021-46360

Vulnerability Description

The vulnerability enables remote attackers to conduct authenticated remote code execution by uploading a PHP shell to the target system via a specific URL in Composr-CMS.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions: 10.0.39 and earlier
Status: Affected

Exploitation Mechanism

Attackers with authenticated access can exploit this vulnerability by uploading a PHP shell through the designated URL, allowing them to execute arbitrary code on the target system.

Mitigation and Prevention

Immediate Steps to Take

Update Composr-CMS to the latest version to patch the vulnerability.
Review and restrict access permissions to critical system files and directories.
Monitor system logs for any suspicious activities, especially file uploads.

Long-Term Security Practices

Implement regular security assessments and penetration testing to identify and address vulnerabilities.
Educate users on safe upload practices and the risks of executing untrusted code.

Patching and Updates

Stay informed about security patches and updates for Composr-CMS.
Apply patches promptly to ensure the system is protected against known vulnerabilities.