CVE-2023-25097 : Vulnerability Insights and Analysis

This CVE-2023-25097 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. It was discovered by Francesco Benvenuto of Cisco Talos.

Understanding CVE-2023-25097

This section will delve into what CVE-2023-25097 entails, its impact, technical details, and mitigation strategies.

What is CVE-2023-25097?

CVE-2023-25097 refers to multiple buffer overflow vulnerabilities in the vtysh_ubus binary of Milesight UR32L v32.3.0.5. These vulnerabilities are attributed to an unsafe sprintf pattern, enabling attackers to execute arbitrary code via specially crafted HTTP requests.

The Impact of CVE-2023-25097

The impact of CVE-2023-25097 lies in its ability to be exploited by attackers with high privileges. By sending malicious HTTP requests, they can trigger these vulnerabilities, potentially leading to arbitrary code execution. The buffer overflow occurs specifically in the set_qos function with the attach_class variable.

Technical Details of CVE-2023-25097

This section will delve into the technical aspects of CVE-2023-25097 including the vulnerability description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

The vulnerability in the vtysh_ubus binary of Milesight UR32L v32.3.0.5 arises from the use of an unsafe sprintf pattern, resulting in multiple buffer overflow vulnerabilities. Attackers can exploit these vulnerabilities through specially crafted HTTP requests.

Affected Systems and Versions

The affected vendor and product for CVE-2023-25097 are Milesight UR32L with version v32.3.0.5. Users utilizing this specific version may be at risk of exploitation if proper mitigation strategies are not implemented.

Exploitation Mechanism

Exploiting CVE-2023-25097 requires sending specifically crafted HTTP requests to the vulnerable vtysh_ubus binary. Through these requests, attackers can trigger the buffer overflow vulnerabilities and potentially execute arbitrary code.

Mitigation and Prevention

In this section, we will discuss the mitigation and prevention measures that can be taken to safeguard systems against CVE-2023-25097.

Immediate Steps to Take

Organizations should consider applying patches or updates provided by the vendor to address the buffer overflow vulnerabilities.
Implement network segmentation and access controls to limit exposure to potential attacks targeting the vulnerable binary.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities and enhance overall system security.
Conduct routine security assessments and penetration testing to identify and mitigate potential risks proactively.

Patching and Updates

Stay informed about security advisories released by the vendor and promptly apply any patches or updates to address vulnerabilities like CVE-2023-25097.
Monitor network traffic for suspicious activity that may indicate exploitation attempts related to the identified vulnerabilities.