CVE-2023-5146 Explained : Impact and Mitigation

This CVE reference points to a vulnerability found in D-Link DAR-7000 and DAR-8000 devices, impacting the /sysmanage/updatelib.php file.

Understanding CVE-2023-5146

This vulnerability, classified as critical, allows for unrestricted file upload due to manipulation of the file_upload argument.

What is CVE-2023-5146?

The CVE-2023-5146 vulnerability affects the unsupported D-Link DAR-7000 and DAR-8000 devices up to version 20151231. It allows for unrestricted file upload by manipulating the file_upload argument in the /sysmanage/updatelib.php file. The exploit can be carried out remotely.

The Impact of CVE-2023-5146

Given the nature of this vulnerability, an attacker could remotely exploit the unrestricted file upload capability, potentially leading to unauthorized access, data loss, or other malicious activities. It is crucial to address this issue promptly to prevent security breaches.

Technical Details of CVE-2023-5146

This section delves into the specifics of the vulnerability, affected systems, and how attackers could potentially exploit it.

Vulnerability Description

The vulnerability in D-Link DAR-7000 and DAR-8000 devices up to version 20151231 allows for unrestricted file upload by manipulating the file_upload argument in the /sysmanage/updatelib.php file.

Affected Systems and Versions

The affected systems include D-Link DAR-7000 and DAR-8000 devices up to version 20151231.

Exploitation Mechanism

Attackers can exploit this vulnerability remotely by manipulating the file_upload argument in the /sysmanage/updatelib.php file, leading to unrestricted file upload.

Mitigation and Prevention

To prevent exploitation and enhance the security posture of the affected devices, immediate action and long-term security practices are essential.

Immediate Steps to Take

Disable any unnecessary services or functionalities.
Implement network segmentation to limit exposure.
Monitor network traffic for suspicious activities.
Communicate with the vendor for further guidance.

Long-Term Security Practices

Regularly update firmware and software to patch known vulnerabilities.
Conduct periodic security assessments and penetration testing.
Educate users and administrators on security best practices.
Implement access controls and least privilege principles.

Patching and Updates

Refer to the vendor's official announcement for patch availability and specific instructions on updating the affected devices. Keeping systems up to date with the latest security patches is crucial to prevent exploitation of known vulnerabilities.