CVE-2023-39617 : Vulnerability Insights and Analysis

TOTOLINK X5000R_V9.1.0cu.2089_B20211224 and X5000R_V9.1.0cu.2350_B20230313 were discovered to contain a remote code execution (RCE) vulnerability via the lang parameter in the setLanguageCfg function.

Understanding CVE-2023-39617

This CVE involves a remote code execution vulnerability found in TOTOLINK X5000R_V9.1.0cu.2089_B20211224 and X5000R_V9.1.0cu.2350_B20230313.

What is CVE-2023-39617?

It is a vulnerability that allows attackers to execute code remotely through a specific parameter in the setLanguageCfg function of the affected TOTOLINK products.

The Impact of CVE-2023-39617

This vulnerability can be exploited by malicious actors to take control of the affected devices, leading to unauthorized code execution and potential compromise of sensitive information.

Technical Details of CVE-2023-39617

The following are the technical details of this CVE:

Vulnerability Description

The vulnerability exists in the handling of the lang parameter within the setLanguageCfg function, enabling attackers to execute arbitrary code remotely.

Affected Systems and Versions

Vendor: TOTOLINK
Products: X5000R_V9.1.0cu.2089_B20211224 and X5000R_V9.1.0cu.2350_B20230313
Affected Version: All versions of the mentioned products

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specially crafted requests containing malicious code via the lang parameter, allowing them to gain unauthorized access to the vulnerable devices.

Mitigation and Prevention

To address CVE-2023-39617, users and administrators can take the following steps:

Immediate Steps to Take

Disable remote access to the affected TOTOLINK devices if possible.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update the firmware of TOTOLINK products to patch known vulnerabilities.
Implement network segmentation to limit the impact of potential security breaches.

Patching and Updates

Stay informed about security updates released by TOTOLINK and apply them promptly to ensure the security of the devices.