CVE-2019-7337 : Vulnerability Insights and Analysis

ZoneMinder version 1.32.3 has a vulnerability known as Reflected Cross Site Scripting (XSS) in the 'events' view. The issue arises due to improper output filtration in the 'limit' parameter value.

Understanding CVE-2019-7337

This CVE involves a security vulnerability in ZoneMinder version 1.32.3 that allows for Reflected Cross Site Scripting (XSS) attacks.

What is CVE-2019-7337?

Reflected Cross Site Scripting (XSS) vulnerability in ZoneMinder version 1.32.3, specifically in the 'events' view, where the 'limit' parameter value is displayed without proper output filtration.

The Impact of CVE-2019-7337

This vulnerability can be exploited by attackers to execute malicious scripts in the context of a user's browser, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2019-7337

The technical aspects of the CVE-2019-7337 vulnerability.

Vulnerability Description

The vulnerability is caused by the sortHeader() function in functions.php, which fails to filter the value of the 'limit' query string parameter properly.

Affected Systems and Versions

Affected Version: ZoneMinder version 1.32.3

Exploitation Mechanism

Attackers can craft malicious links containing script code that, when clicked by a user with privileges, can execute arbitrary code in the user's browser.

Mitigation and Prevention

Protecting systems from the CVE-2019-7337 vulnerability.

Immediate Steps to Take

Update ZoneMinder to a patched version that addresses the XSS vulnerability.
Avoid clicking on suspicious links or visiting untrusted websites to mitigate the risk of XSS attacks.

Long-Term Security Practices

Regularly monitor security advisories and updates from ZoneMinder to stay informed about potential vulnerabilities.
Implement content security policy (CSP) headers to mitigate XSS risks by restricting the sources from which certain types of content can be loaded.

Patching and Updates

Apply patches or updates provided by ZoneMinder to fix the XSS vulnerability and enhance the security of the application.