CVE-2024-0571 Explained : Impact and Mitigation

This article discusses CVE-2024-0571, a critical vulnerability found in Totolink LR1200GB version 9.1.0u.6619_B20230130, affecting the function setSmsCfg of the file /cgi-bin/cstecgi.cgi.

Understanding CVE-2024-0571

This vulnerability, classified as a stack-based buffer overflow (CWE-121), poses a high risk as it allows for remote initiation of attacks. The base severity score is high, with a CVSS v2.0 score of 9 and CVSS v3.1 score of 8.8.

What is CVE-2024-0571?

The vulnerability in Totolink LR1200GB version 9.1.0u.6619_B20230130 enables a stack-based buffer overflow when manipulating the argument text of the function setSmsCfg within the file /cgi-bin/cstecgi.cgi. This can be exploited remotely, making it a severe threat.

The Impact of CVE-2024-0571

Given the critical nature of the vulnerability, unauthorized attackers can potentially exploit this flaw to execute arbitrary code or crash the system, leading to a compromise of confidentiality, integrity, and availability.

Technical Details of CVE-2024-0571

This section provides a deeper dive into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability arises from an unchecked buffer in the setSmsCfg function, allowing attackers to exceed the buffer limits and corrupt the stack, leading to potential code execution or system instability.

Affected Systems and Versions

The specific version impacted by CVE-2024-0571 is Totolink LR1200GB version 9.1.0u.6619_B20230130. Users relying on this version are at risk of exploitation until a patch is applied.

Exploitation Mechanism

By manipulating the text argument in the setSmsCfg function, threat actors can craft malicious input that overflows the buffer, gaining control over the program's execution flow and potentially executing arbitrary commands.

Mitigation and Prevention

To safeguard systems from CVE-2024-0571, proactive measures and responses are necessary.

Immediate Steps to Take

Users and administrators are advised to apply security patches promptly, disable unused services, and implement network controls to limit potential attack surfaces.

Long-Term Security Practices

Regular security audits, threat assessments, and employee training on cybersecurity best practices can help organizations enhance their overall security posture and resilience against emerging threats.

Patching and Updates

Vendors often release patches to address known vulnerabilities. It is crucial for users to monitor security advisories from their vendors and apply updates as soon as they become available to mitigate risks effectively.