CVE-2023-25108 : Security Advisory and Response

This is an overview of CVE-2023-25108, detailing the vulnerabilities identified in the Milesight UR32L v32.3.0.5 container.

Understanding CVE-2023-25108

In this section, you will gain an understanding of the nature of CVE-2023-25108 and its potential impact.

What is CVE-2023-25108?

CVE-2023-25108 involves multiple buffer overflow vulnerabilities present in the vtysh_ubus binary of Milesight UR32L v32.3.0.5. These vulnerabilities stem from the utilization of an unsafe sprintf pattern. An attacker with elevated privileges can exploit a specially crafted HTTP request to execute arbitrary code, potentially leading to serious consequences. The specific buffer overflow occurs within the set_gre function, involving the remote_ip variable.

The Impact of CVE-2023-25108

The impact of CVE-2023-25108 is significant, as it can result in high severity consequences. With a CVSS v3.1 base score of 7.2 (classified as HIGH severity), the vulnerability can be exploited remotely without user interaction. Attackers leveraging this vulnerability can compromise the confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2023-25108

Delve into the technical aspects of CVE-2023-25108 to understand its vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability in CVE-2023-25108 is categorized as a stack-based buffer overflow (CWE-121). This occurs due to the inadequate handling of data within the vtysh_ubus binary of Milesight UR32L v32.3.0.5, leading to a potential security breach.

Affected Systems and Versions

The impacted system identified in this CVE is the Milesight UR32L running version v32.3.0.5. Systems operating on this particular version are susceptible to the buffer overflow vulnerabilities associated with CVE-2023-25108.

Exploitation Mechanism

Exploiting CVE-2023-25108 involves sending specially crafted HTTP requests to the target system with the intention of triggering the buffer overflow vulnerabilities present in the set_gre function. This can allow attackers to execute arbitrary code on the affected system, posing a severe security risk.

Mitigation and Prevention

Learn about the necessary steps to mitigate the risks posed by CVE-2023-25108 and prevent potential security breaches.

Immediate Steps to Take

Immediately addressing CVE-2023-25108 involves implementing security measures such as restricting access to vulnerable systems, monitoring network traffic for suspicious activities, and deploying security patches provided by the vendor.

Long-Term Security Practices

In the long term, organizations should focus on enhancing their network security posture by conducting regular security audits, ensuring software code is free from vulnerabilities, and educating users about best security practices to prevent similar incidents in the future.

Patching and Updates

To mitigate the vulnerabilities associated with CVE-2023-25108, it is crucial to apply patches released by Milesight to address the buffer overflow issues in the vtysh_ubus binary of the UR32L v32.3.0.5 version. Regularly updating systems with the latest security patches is essential to maintain a secure environment.