CVE-2019-17488 : Security Advisory and Response

Symphony, also known as b3log Symphony, is vulnerable to cross-site scripting (XSS) attacks in versions prior to 3.6.0. This vulnerability is specifically found in the HTTP User-Agent header.

Understanding CVE-2019-17488

b3log Symphony (aka Sym) before 3.6.0 has XSS via the HTTP User-Agent header.

What is CVE-2019-17488?

CVE-2019-17488 is a vulnerability in Symphony (b3log Symphony) that allows for cross-site scripting (XSS) attacks when using versions earlier than 3.6.0. The vulnerability resides in the HTTP User-Agent header.

The Impact of CVE-2019-17488

This vulnerability could allow 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-2019-17488

Symphony's vulnerability to XSS attacks in versions prior to 3.6.0.

Vulnerability Description

Symphony (b3log Symphony) versions before 3.6.0 are susceptible to cross-site scripting (XSS) attacks through the HTTP User-Agent header.

Affected Systems and Versions

Product: Symphony (b3log Symphony)
Vendor: N/A
Versions Affected: Versions prior to 3.6.0

Exploitation Mechanism

The vulnerability can be exploited by injecting malicious scripts into the HTTP User-Agent header, which, when executed, can compromise the security of the system.

Mitigation and Prevention

Steps to address and prevent the CVE-2019-17488 vulnerability.

Immediate Steps to Take

Upgrade Symphony to version 3.6.0 or later to mitigate the XSS vulnerability.
Regularly monitor and sanitize user inputs to prevent script injection attacks.

Long-Term Security Practices

Implement secure coding practices to avoid XSS vulnerabilities in web applications.
Conduct regular security audits and penetration testing to identify and address potential security weaknesses.

Patching and Updates

Stay informed about security updates and patches released by Symphony (b3log Symphony) to address known vulnerabilities and enhance system security.