CVE-2020-5273 : Security Advisory and Response

In PrestaShop module ps_linklist versions before 3.1.0, a stored XSS vulnerability exists when using custom URLs. This issue has been addressed in version 3.1.0.

Understanding CVE-2020-5273

This CVE involves a stored XSS vulnerability in the PrestaShop module ps_linklist.

What is CVE-2020-5273?

CVE-2020-5273 is a vulnerability in the ps_linklist module of PrestaShop that allows for stored cross-site scripting (XSS) attacks when custom URLs are utilized.

The Impact of CVE-2020-5273

The impact of this vulnerability is rated as MEDIUM with a CVSS base score of 4.1. It requires user interaction and has low confidentiality and integrity impacts.

Technical Details of CVE-2020-5273

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability involves improper neutralization of input during web page generation, leading to stored XSS.

Affected Systems and Versions

Product: ps_linklist
Vendor: PrestaShop
Versions Affected: < 3.1.0

Exploitation Mechanism

Attack Complexity: LOW
Attack Vector: NETWORK
Privileges Required: LOW
User Interaction: REQUIRED
Scope: CHANGED

Mitigation and Prevention

Protecting systems from CVE-2020-5273 requires specific actions.

Immediate Steps to Take

Update the ps_linklist module to version 3.1.0 or higher.
Avoid using custom URLs until the module is patched.

Long-Term Security Practices

Regularly update all modules and software to the latest versions.
Implement input validation and output encoding to prevent XSS vulnerabilities.

Patching and Updates

Apply patches and updates provided by PrestaShop to fix the vulnerability.