CVE-2017-7188 : Security Advisory and Response

Zurmo 3.1.1 Stable version contains a vulnerability that enables attackers to conduct a Cross-Site Scripting (XSS) attack.

Understanding CVE-2017-7188

What is CVE-2017-7188?

Zurmo 3.1.1 Stable version allows a Cross-Site Scripting (XSS) attack when a base64-encoded SCRIPT element is embedded within a data: URL in the returnUrl parameter to the default/toggleCollapse function.

The Impact of CVE-2017-7188

This vulnerability could 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-2017-7188

Vulnerability Description

Zurmo 3.1.1 Stable version is susceptible to a Cross-Site Scripting (XSS) attack due to improper handling of base64-encoded SCRIPT elements within data: URLs.

Affected Systems and Versions

Product: Zurmo 3.1.1 Stable
Vendor: Zurmo
Versions affected: All versions

Exploitation Mechanism

The vulnerability arises when a SCRIPT element encoded in base64 format is inserted into the returnUrl parameter of the default/toggleCollapse function.

Mitigation and Prevention

Immediate Steps to Take

Disable the affected functionality if not essential for operations.
Implement input validation to sanitize user-supplied data.
Regularly monitor and analyze web traffic for suspicious activities.

Long-Term Security Practices

Conduct regular security assessments and penetration testing.
Educate developers and users on secure coding practices.
Stay informed about security updates and patches.

Patching and Updates

Apply security patches provided by Zurmo to address the XSS vulnerability in Zurmo 3.1.1 Stable.