CVE-2023-31476 Explained : Impact and Mitigation
Learn about CVE-2023-31476, a critical vulnerability on GL.iNet devices allowing arbitrary file creation. Understand its impact, technical details, and mitigation steps.
This article provides an overview of CVE-2023-31476, including its impact, technical details, mitigation, and prevention strategies.
Understanding CVE-2023-31476
CVE-2023-31476 is a security vulnerability found in GL.iNet devices running firmware versions before 3.216. It allows an attacker to perform an arbitrary file write operation, enabling the creation of an empty file nearly anywhere on the filesystem, provided the filename and path are not more than 6 characters.
What is CVE-2023-31476?
CVE-2023-31476 is an arbitrary file write vulnerability affecting GL.iNet devices. By exploiting this flaw, an adversary could plant empty files across the filesystem with limited filename length restrictions.
The Impact of CVE-2023-31476
This vulnerability poses a severe risk as it allows an attacker to manipulate the filesystem of the affected devices, potentially leading to unauthorized access or further exploitation of the system.
Technical Details of CVE-2023-31476
The technical aspects of CVE-2023-31476 involve an arbitrary file write capability on GL.iNet devices running firmware versions prior to 3.216.
Vulnerability Description
The flaw enables the creation of empty files in various locations within the filesystem, leveraging the limitations on filename and path length.
Affected Systems and Versions
GL.iNet devices running firmware versions before 3.216 are impacted by this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting specific filenames and paths to create empty files on the filesystem, potentially disrupting normal device operations.
Mitigation and Prevention
To safeguard against CVE-2023-31476, proactive measures need to be implemented to mitigate risks and prevent unauthorized file creation on affected GL.iNet devices.
Immediate Steps to Take
Users should update their devices to firmware version 3.216 or later to patch the arbitrary file write vulnerability.
Long-Term Security Practices
Regularly updating device firmware, monitoring filesystem changes, and restricting unnecessary file write permissions can enhance the overall security posture.
Patching and Updates
Vendor-released patches and firmware updates play a crucial role in addressing CVE-2023-31476. Stay informed about security advisories and promptly apply recommended updates.