CVE-2023-5148 : Security Advisory and Response

This article discusses CVE-2023-5148, a vulnerability found in D-Link DAR-7000 and DAR-8000 devices allowing for unrestricted upload via the

uploadfile.php

script up to version 20151231.

Understanding CVE-2023-5148

CVE-2023-5148 is a critical vulnerability impacting D-Link DAR-7000 and DAR-8000 devices up to version 20151231. The flaw allows for unrestricted upload manipulation through the

file_upload

argument, enabling remote attackers to initiate attacks.

What is CVE-2023-5148?

The vulnerability in CVE-2023-5148 affects the code of the file

uploadfile.php

in D-Link DAR-7000 and DAR-8000 devices, potentially exposing them to unauthorized file uploads. The exploit has been disclosed publicly, posing significant risks to affected systems.

The Impact of CVE-2023-5148

The impact of CVE-2023-5148 is deemed critical, as it could lead to unauthorized file uploads and manipulation on vulnerable D-Link DAR-7000 and DAR-8000 devices. The exploit can be executed remotely, making it a serious security concern for affected systems.

Technical Details of CVE-2023-5148

This section delves into the technical aspects of CVE-2023-5148, including vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability arises due to unrestricted upload capabilities in the

uploadfile.php

script of D-Link DAR-7000 and DAR-8000 devices, allowing attackers to manipulate the

file_upload

argument for unauthorized file uploads.

Affected Systems and Versions

D-Link DAR-7000 and DAR-8000 devices up to version 20151231 are affected by CVE-2023-5148, leaving them vulnerable to exploitation through the

uploadfile.php

script.

Exploitation Mechanism

The exploitation of CVE-2023-5148 involves manipulating the

file_upload

argument in the

uploadfile.php

script, enabling threat actors to upload files to the affected D-Link devices without proper authorization.

Mitigation and Prevention

Taking immediate steps, implementing long-term security practices, and applying necessary patches and updates are crucial in mitigating the risks associated with CVE-2023-5148.

Immediate Steps to Take

Disable access to vulnerable scripts like

uploadfile.php

on D-Link DAR-7000 and DAR-8000 devices.
Monitor network traffic for any suspicious activities related to unauthorized file uploads.
Notify users about the vulnerability and its potential impact on system security.

Long-Term Security Practices

Regularly update and patch devices to prevent exploitation of known vulnerabilities.
Conduct security assessments and penetration testing to identify and address potential weaknesses.
Implement access controls and authentication mechanisms to restrict unauthorized file uploads.

Patching and Updates

Vendors should release security patches and updates to address CVE-2023-5148, ensuring that D-Link DAR-7000 and DAR-8000 devices receive necessary fixes to mitigate the risk of unrestricted uploads.