CVE-2023-5144 : Exploit Details and Defense Strategies

This CVE record was published on September 24, 2023, and it pertains to a vulnerability found in D-Link DAR-7000 and DAR-8000 devices related to an unrestricted upload via the updateos.php file.

Understanding CVE-2023-5144

This CVE identifies a critical vulnerability in D-Link DAR-7000 and DAR-8000 devices up to version 20151231. The vulnerability allows for unrestricted upload due to manipulation of the file_upload argument in the /sysmanage/updateos.php file. The exploit can be triggered remotely.

What is CVE-2023-5144?

The vulnerability in CVE-2023-5144 affects unsupported D-Link DAR-7000 and DAR-8000 devices up to version 20151231, allowing for unrestricted upload.

The Impact of CVE-2023-5144

This vulnerability can be exploited remotely, potentially leading to unauthorized upload of files. As the affected versions are no longer supported, this poses a significant risk as the maintainer has confirmed the end-of-life status of the product.

Technical Details of CVE-2023-5144

The vulnerability was classified with a CVSS base score of 6.3, falling under a medium severity level. The specific CVSS vectors and base scores vary across versions, with the most recent CVSS version 3.1 scoring it at 6.3.

Vulnerability Description

The vulnerability allows attackers to perform an unrestricted upload by exploiting an unknown function in the /sysmanage/updateos.php file of D-Link DAR-7000 and DAR-8000 devices.

Affected Systems and Versions

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

Exploitation Mechanism

The vulnerability can be exploited remotely by manipulating the file_upload argument in the identified file, leading to an unrestricted upload capability.

Mitigation and Prevention

Given the critical nature of the vulnerability and the lack of support for affected devices, immediate steps should be taken to mitigate the risks associated with CVE-2023-5144.

Immediate Steps to Take

It is recommended to retire and replace the unsupported D-Link DAR-7000 and DAR-8000 devices to prevent potential exploitation of the unrestricted upload vulnerability.

Long-Term Security Practices

Maintaining an up-to-date inventory of supported devices and ensuring timely end-of-life transitions can help prevent similar vulnerabilities in the future.

Patching and Updates

For supported D-Link devices, applying relevant patches and updates as provided by the vendor is crucial to addressing security vulnerabilities effectively.