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CVE-2023-25111 Explained : Impact and Mitigation

Learn about CVE-2023-25111 impacting Milesight UR32L v32.3.0.5 due to buffer overflow vulnerabilities. Find out about the risks, impact, and mitigation strategies.

This CVE-2023-25111 impacts Milesight UR32L v32.3.0.5, due to multiple buffer overflow vulnerabilities in the vtysh_ubus binary. An attacker with high privileges can exploit these vulnerabilities through specially crafted HTTP requests, leading to arbitrary code execution.

Understanding CVE-2023-25111

This section will delve into what CVE-2023-25111 entails, its impact, technical details, and mitigation strategies.

What is CVE-2023-25111?

CVE-2023-25111 involves multiple buffer overflow vulnerabilities present in the vtysh_ubus binary of Milesight UR32L v32.3.0.5. These vulnerabilities stem from the usage of an unsafe sprintf pattern within the set_gre function, specifically affecting the key variable. Attackers can exploit this flaw by sending malicious HTTP requests to trigger arbitrary code execution.

The Impact of CVE-2023-25111

The impact of CVE-2023-25111 is significant, with a CVSSv3.1 base score of 7.2, categorizing it as a high-severity vulnerability. The confidentiality, integrity, and availability of systems running the affected versions are at high risk. An attacker with high privileges could potentially exploit this vulnerability to compromise the system.

Technical Details of CVE-2023-25111

In this section, we will explore the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability in CVE-2023-25111 is attributed to multiple buffer overflow issues in the vtysh_ubus binary of Milesight UR32L v32.3.0.5, caused by an unsafe sprintf pattern. This can be exploited through specially crafted HTTP requests.

Affected Systems and Versions

The affected system is the Milesight UR32L running version v32.3.0.5, making them susceptible to the buffer overflow vulnerabilities detailed in this CVE.

Exploitation Mechanism

Attackers with high privileges can exploit CVE-2023-25111 by sending crafted HTTP requests to the set_gre function, triggering buffer overflows and ultimately executing arbitrary code.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-25111, immediate steps should be taken alongside the implementation of long-term security practices and patching procedures.

Immediate Steps to Take

System administrators should consider implementing access controls, restricting network traffic to vulnerable systems, and monitoring for any unusual activities that could indicate an exploitation attempt.

Long-Term Security Practices

In the long term, organizations should prioritize secure coding practices, regular security assessments, and ongoing security training for personnel to enhance overall security posture.

Patching and Updates

Vendors should release patches to address the buffer overflow vulnerabilities in the affected versions promptly. It is crucial for system administrators to apply these patches as soon as they become available to mitigate the risks posed by CVE-2023-25111.

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