CVE-2023-25092 : Vulnerability Insights and Analysis

This is a detailed analysis of CVE-2023-25092, which discloses multiple buffer overflow vulnerabilities in the vtysh_ubus binary of Milesight UR32L v32.3.0.5, resulting from the utilization of an unsafe sprintf pattern. These vulnerabilities have the potential to allow an adversary to execute arbitrary code by sending a specially crafted HTTP request. The vulnerability is attributed to the handle_interface_acl function with the interface and out_acl variables.

Understanding CVE-2023-25092

This section delves deeper into the significance and implications of CVE-2023-25092.

What is CVE-2023-25092?

CVE-2023-25092 involves multiple buffer overflow vulnerabilities present in the vtysh_ubus binary of Milesight UR32L v32.3.0.5, which can be exploited through the manipulation of HTTP requests to execute arbitrary code. The vulnerabilities are a result of an insecure sprintf pattern used within the affected software.

The Impact of CVE-2023-25092

The impact of CVE-2023-25092 is severe as it allows an attacker with high privileges to potentially execute arbitrary code on the target system. This could lead to a compromise of confidentiality, integrity, and availability of the affected device or network.

Technical Details of CVE-2023-25092

Understanding the technical aspects and implications of CVE-2023-25092 is crucial for effective mitigation and prevention strategies.

Vulnerability Description

The vulnerability is categorized as a CWE-121: Stack-based Buffer Overflow, indicating that an attacker can overwrite the stack buffer of the affected software, leading to potential exploitation and execution of malicious code.

Affected Systems and Versions

The vulnerability affects Milesight UR32L version v32.3.0.5 specifically, highlighting the importance of updating to a secure version to mitigate the risks associated with CVE-2023-25092.

Exploitation Mechanism

Exploiting CVE-2023-25092 involves sending a specially crafted HTTP request to the vulnerable system, triggering the buffer overflow in the handle_interface_acl function. This could enable an attacker to achieve arbitrary code execution.

Mitigation and Prevention

Taking immediate and proactive measures to mitigate the impact of CVE-2023-25092 is essential to safeguard systems and networks against potential exploitation.

Immediate Steps to Take

Patch the affected systems by applying security updates provided by the vendor promptly.
Limit network access to vulnerable systems and implement proper network segmentation.
Monitor network traffic for any suspicious HTTP requests that could indicate exploitation attempts.

Long-Term Security Practices

Employ secure coding practices to prevent buffer overflow vulnerabilities in software development.
Conduct regular security assessments and penetration testing to identify and address potential vulnerabilities proactively.
Educate system administrators and users about the importance of cybersecurity and best practices to mitigate risks effectively.

Patching and Updates

Vendor-issued patches and updates should be applied as soon as they are made available to address CVE-2023-25092 and enhance the overall security posture of the affected systems. Regularly updating software and firmware is crucial to stay protected against known vulnerabilities.