CVE-2023-48811 Explained : Impact and Mitigation

This article provides an overview of CVE-2023-48811, detailing the vulnerability, its impact, technical details, and mitigation strategies.

Understanding CVE-2023-48811

In TOTOLINK X6000R V9.4.0cu.852_B20230719, a vulnerability exists in the shttpd file, specifically in the sub_4119A0 function. This vulnerability allows an attacker to execute arbitrary commands by manipulating fields from the front-end.

What is CVE-2023-48811?

The vulnerability in TOTOLINK X6000R V9.4.0cu.852_B20230719 allows attackers to exploit the sub_4119A0 function, leading to command execution through a specific function call chain.

The Impact of CVE-2023-48811

With this vulnerability, threat actors can remotely execute unauthorized commands on the affected system, potentially causing system compromise, data loss, or unauthorized access.

Technical Details of CVE-2023-48811

The following points provide detailed technical insights into CVE-2023-48811:

Vulnerability Description

The vulnerability arises from improper handling of user-supplied data in the sub_4119A0 function, enabling attackers to inject and execute malicious commands on the system.

Affected Systems and Versions

The vulnerability affects TOTOLINK X6000R V9.4.0cu.852_B20230719, with the specific version mentioned being susceptible to command execution.

Exploitation Mechanism

Attackers exploit this vulnerability by manipulating fields from the front-end, passing them to specific functions, ultimately leading to the execution of unauthorized commands.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-48811, it is crucial to take immediate actions and adopt long-term security measures.

Immediate Steps to Take

Disable remote access to the vulnerable system if not required.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly update system firmware and software to patch known vulnerabilities.
Conduct security audits and penetration testing to identify and address potential vulnerabilities.

Patching and Updates

Stay informed about security updates and patches released by the vendor. Apply patches promptly to safeguard the system against known vulnerabilities.