CVE-2023-23550 : What You Need to Know

This CVE-2023-23550 article provides detailed insights into a critical OS command injection vulnerability affecting Milesight UR32L v32.3.0.5.

Understanding CVE-2023-23550

The vulnerability identified as CVE-2023-23550 is an OS command injection flaw found in the ys_thirdparty user_delete functionality of the Milesight UR32L v32.3.0.5. This weakness can be exploited by an attacker through a specially crafted network packet, enabling unauthorized command execution.

What is CVE-2023-23550?

The CVE-2023-23550 vulnerability involves improper neutralization of special elements in a command, known as 'Command Injection' (CWE-77). In this case, an attacker with high privileges can manipulate network packets to execute malicious commands on the vulnerable system.

The Impact of CVE-2023-23550

The impact of CVE-2023-23550 is significant, given the high CVSSv3.1 base score of 7.2, categorizing it as a high-severity vulnerability. It poses a risk to confidentiality, integrity, and availability, making it crucial to address promptly to prevent exploitation.

Technical Details of CVE-2023-23550

This section delves into the technical aspects of the vulnerability, outlining its description, affected systems, versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability stems from the lack of proper input validation in the ys_thirdparty user_delete functionality of Milesight UR32L v32.3.0.5, allowing an attacker to inject and execute malicious commands through specially crafted network packets.

Affected Systems and Versions

The impacted system is the Milesight UR32L with version v32.3.0.5. Users utilizing this specific version are at risk of exploitation through the identified OS command injection vulnerability.

Exploitation Mechanism

To exploit CVE-2023-23550, an attacker can craft malicious network packets and send a sequence of requests to the ys_thirdparty user_delete functionality. By manipulating the input data, the attacker can trigger the execution of unauthorized commands within the vulnerable system.

Mitigation and Prevention

In response to CVE-2023-23550, implementing immediate steps, adopting long-term security practices, and applying necessary patches are crucial to mitigating the risk posed by this vulnerability.

Immediate Steps to Take

Disable ys_thirdparty user_delete functionality if not essential.
Implement network-level controls to restrict access to potentially vulnerable services.
Monitor network traffic for any suspicious activities that may indicate exploitation attempts.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and address vulnerabilities proactively.
Educate system administrators and users about the risks of command injection attacks and the importance of secure coding practices.

Patching and Updates

Update the affected Milesight UR32L device to a patched version that addresses the OS command injection vulnerability.
Stay informed about security advisories and updates released by the vendor to ensure timely protection against known vulnerabilities.

By following these mitigation strategies and best practices, organizations can enhance their cybersecurity posture and reduce the likelihood of exploitation through CVE-2023-23550.