CVE-2017-5938 : Security Advisory and Response

ViewVC versions prior to 1.0.14 and 1.1.x before 1.1.26 are susceptible to a cross-site scripting (XSS) vulnerability in the nav_path function.

Understanding CVE-2017-5938

This CVE involves a security flaw in ViewVC that allows attackers to execute XSS attacks.

What is CVE-2017-5938?

The vulnerability in the nav_path function of ViewVC versions earlier than 1.0.14 and 1.1.x versions before 1.1.26 permits the injection of malicious web scripts or HTML through the nav_data name.

The Impact of CVE-2017-5938

The XSS vulnerability in ViewVC could be exploited by remote attackers to inject arbitrary web script or HTML, potentially leading to unauthorized access or data theft.

Technical Details of CVE-2017-5938

ViewVC's security issue is detailed below:

Vulnerability Description

The nav_path function in lib/viewvc.py in affected ViewVC versions allows for XSS attacks by enabling the injection of arbitrary web script or HTML via the nav_data name.

Affected Systems and Versions

ViewVC versions earlier than 1.0.14
ViewVC 1.1.x versions before 1.1.26

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious web scripts or HTML through the nav_data name in ViewVC.

Mitigation and Prevention

Protect your systems from CVE-2017-5938 with the following measures:

Immediate Steps to Take

Update ViewVC to version 1.0.14 or 1.1.26 to patch the vulnerability.
Implement input validation to sanitize user inputs and prevent XSS attacks.

Long-Term Security Practices

Regularly monitor and audit web applications for security vulnerabilities.
Educate developers on secure coding practices to prevent XSS vulnerabilities.

Patching and Updates

Stay informed about security advisories and promptly apply patches to mitigate known vulnerabilities.