CVE-2023-25094 : Exploit Details and Defense Strategies

This CVE-2023-25094 article provides detailed information about multiple buffer overflow vulnerabilities present in the vtysh_ubus binary of Milesight UR32L v32.3.0.5. These vulnerabilities can be exploited through specially crafted HTTP requests, potentially leading to arbitrary code execution.

Understanding CVE-2023-25094

The CVE-2023-25094 vulnerability involves buffer overflow issues in the vtysh_ubus binary of Milesight UR32L v32.3.0.5. These vulnerabilities stem from the use of an unsafe sprintf pattern, allowing attackers to manipulate HTTP requests to execute arbitrary code on affected systems.

What is CVE-2023-25094?

The CVE-2023-25094 vulnerability comprises multiple buffer overflow weaknesses within the vtysh_ubus binary of the Milesight UR32L v32.3.0.5 product. These vulnerabilities can be exploited by an attacker with elevated privileges by sending malicious HTTP requests.

The Impact of CVE-2023-25094

The impact of CVE-2023-25094 is rated as HIGH severity. Successful exploitation of these vulnerabilities could result in arbitrary code execution, posing a significant risk to the confidentiality, integrity, and availability of the affected systems.

Technical Details of CVE-2023-25094

This section delves deeper into the technical aspects of the CVE-2023-25094 vulnerability, providing insights into the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The CVE-2023-25094 vulnerability arises from multiple buffer overflow vulnerabilities in the vtysh_ubus binary of Milesight UR32L v32.3.0.5. Attackers can leverage an unsafe sprintf pattern to craft HTTP requests, ultimately leading to arbitrary code execution on vulnerable systems.

Affected Systems and Versions

The vulnerability affects the Milesight UR32L product specifically version v32.3.0.5. Users utilizing this version are advised to take immediate action to mitigate the associated risks.

Exploitation Mechanism

By sending specially crafted HTTP requests to the into_class_node function with either the class_name or old_class_name variable, an attacker with elevated privileges can trigger the buffer overflow vulnerabilities present in the vtysh_ubus binary of Milesight UR32L v32.3.0.5.

Mitigation and Prevention

In response to CVE-2023-25094, it is crucial for users and administrators to take immediate steps to secure their systems, implement long-term security practices, and apply necessary patches and updates to mitigate the risks posed by these buffer overflow vulnerabilities.

Immediate Steps to Take

Users should patch their systems promptly with security updates provided by the vendor.
Restrict network access to vulnerable systems to minimize exposure to potential attacks.
Monitor network traffic for any suspicious activity that could indicate exploitation attempts.

Long-Term Security Practices

Implement secure coding practices to prevent buffer overflow vulnerabilities in software development.
Conduct regular security assessments and penetration testing to identify and remediate potential vulnerabilities.
Educate users and administrators about safe computing practices to enhance overall security posture.

Patching and Updates

Stay informed about security advisories and updates from the vendor to apply patches promptly.
Regularly update and maintain security software solutions to protect against known and emerging threats.
Consider implementing network segmentation and access controls to contain and mitigate the impact of potential breaches.