CVE-2023-27231 Explained : Impact and Mitigation

This CVE record was published on March 28, 2023, by MITRE. It involves a command injection vulnerability found in TOTOlink A7100RU V7.4cu.2313_B20191024 through the downBw parameter at /setting/setWanIeCfg.

Understanding CVE-2023-27231

In this section, we will delve into the details of CVE-2023-27231 and understand its impact, technical aspects, and mitigation strategies.

What is CVE-2023-27231?

CVE-2023-27231 is a command injection vulnerability identified in TOTOlink A7100RU V7.4cu.2313_B20191024. This vulnerability allows attackers to inject and execute commands through the downBw parameter located at /setting/setWanIeCfg.

The Impact of CVE-2023-27231

The impact of this vulnerability is significant as it enables malicious actors to execute arbitrary commands on the affected system. This could lead to unauthorized access, data theft, and overall system compromise.

Technical Details of CVE-2023-27231

Let's explore the technical specifics of CVE-2023-27231 including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability in TOTOlink A7100RU V7.4cu.2313_B20191024 arises due to improper input validation in the downBw parameter, allowing attackers to inject and execute commands on the system.

Affected Systems and Versions

The affected system in this case is TOTOlink A7100RU V7.4cu.2313_B20191024. All versions of this particular system are susceptible to the command injection vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious input and injecting it via the downBw parameter at the specified location (/setting/setWanIeCfg). This allows them to execute unauthorized commands on the system.

Mitigation and Prevention

To safeguard against CVE-2023-27231 and similar vulnerabilities, it is crucial to take immediate steps, implement long-term security practices, and ensure timely patching and updates.

Immediate Steps to Take

Immediately disable any externally facing interfaces on the affected system, restrict network access to only essential services, and monitor for any suspicious activities.

Long-Term Security Practices

In the long term, consider implementing network segmentation, conducting regular security assessments, educating users about phishing and social engineering tactics, and keeping systems up to date with security patches.

Patching and Updates

It is essential to apply patches or updates released by the vendor to address the command injection vulnerability in TOTOlink A7100RU V7.4cu.2313_B20191024. Regularly check for security advisories and apply patches promptly to mitigate risks.