CVE-2023-25825 : What You Need to Know

This CVE record pertains to a vulnerability found in ZoneMinder, an open-source Closed-circuit television software application for Linux. The vulnerability allows for Cross-site Scripting via log viewing in versions prior to 1.36.33.

Understanding CVE-2023-25825

ZoneMinder, a CCTV software for Linux, is susceptible to Cross-site Scripting attacks due to improper neutralization of input during web page generation. This vulnerability allows malicious log entries with a harmful referrer field to be injected into the database logs, posing a security risk when viewing logs through the web user interface.

What is CVE-2023-25825?

CVE-2023-25825 is a vulnerability in ZoneMinder that enables attackers to execute Cross-site Scripting attacks by injecting malicious log entries with a harmful referrer field into the database logs. This can lead to potential security breaches and unauthorized access.

The Impact of CVE-2023-25825

The impact of CVE-2023-25825 is significant, with a base severity rating of HIGH. The confidentiality impact is rated as HIGH, emphasizing the potential risks associated with unauthorized access to sensitive information.

Technical Details of CVE-2023-25825

The vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'). The CVSS v3.1 base score is 7.7, indicating a high-severity issue with low attack complexity and network-based attack vector.

Vulnerability Description

The vulnerability in ZoneMinder allows for Cross-site Scripting attacks through log viewing, where malicious log entries can be injected into the database logs with a harmful referrer field. This unescaped input presents a potential security threat when viewing logs in the web user interface.

Affected Systems and Versions

The affected system is ZoneMinder, specifically versions prior to 1.36.33. Users operating on versions earlier than this are vulnerable to Cross-site Scripting attacks via log viewing.

Exploitation Mechanism

Attackers can exploit the vulnerability by injecting crafted log entries with a malicious referrer field into the database logs. Subsequently, this input can be leveraged to execute Cross-site Scripting attacks when viewing logs through the web user interface.

Mitigation and Prevention

It is crucial for users and administrators to take immediate steps to mitigate the risks posed by CVE-2023-25825 and implement long-term security practices to prevent similar vulnerabilities.

Immediate Steps to Take

Update ZoneMinder to version 1.36.33 or the latest available patch.
Regularly monitor and review logs for any suspicious or unauthorized activities.

Long-Term Security Practices

Conduct regular security assessments and audits to identify and address vulnerabilities promptly.
Educate users on secure coding practices and the risks associated with Cross-site Scripting attacks.

Patching and Updates

ZoneMinder has released version 1.36.33 to address the CVE-2023-25825 vulnerability. Users are strongly advised to update to this version to eliminate the risk of Cross-site Scripting attacks via log viewing.