CVE-2023-50445 : What You Need to Know

A Shell Injection vulnerability has been identified in GL.iNet routers running specific firmware versions, allowing local attackers to execute arbitrary code.

Understanding CVE-2023-50445

This section will provide insights into the Shell Injection vulnerability affecting GL.iNet routers.

What is CVE-2023-50445?

The CVE-2023-50445 is a Shell Injection vulnerability found in GL.iNet routers, including models A1300, AX1800, AXT1800, MT3000, MT2500, MT6000, MT1300, MT300N-V2, AR750S, AR750, AR300M, and B1300. Attackers can exploit this flaw to execute arbitrary code through specific router functions.

The Impact of CVE-2023-50445

The impact of this vulnerability is significant as it allows local attackers to execute malicious code on affected GL.iNet routers, potentially leading to unauthorized access or further compromise of the device.

Technical Details of CVE-2023-50445

In this section, we will delve into the technical aspects of the CVE-2023-50445 vulnerability.

Vulnerability Description

The vulnerability resides in the logread and upgrade modules of the affected GL.iNet routers, enabling attackers to execute arbitrary code via certain router functions.

Affected Systems and Versions

GL.iNet routers running firmware versions A1300 v4.4.6, AX1800 v4.4.6, AXT1800 v4.4.6, MT3000 v4.4.6, MT2500 v4.4.6, MT6000 v4.5.0, MT1300 v4.3.7, MT300N-V2 v4.3.7, AR750S v4.3.7, AR750 v4.3.7, AR300M v4.3.7, and B1300 v4.3.7 are affected by this vulnerability.

Exploitation Mechanism

Attackers exploit the vulnerability by leveraging the get_system_log, get_crash_log functions of the logread module, and the upgrade_online function of the upgrade module within the GL.iNet routers.

Mitigation and Prevention

This section focuses on mitigating the CVE-2023-50445 vulnerability and implementing preventive measures.

Immediate Steps to Take

Update GL.iNet router firmware to the latest version available from the vendor.
Monitor network traffic for any suspicious activity or unauthorized access attempts.

Long-Term Security Practices

Regularly apply security patches and updates to ensure the router's protection against known vulnerabilities.
Implement strong access controls and authentication mechanisms to prevent unauthorized access to the router.

Patching and Updates

Stay informed about security advisories from GL.iNet and promptly apply patches or updates to address any identified vulnerabilities.