CVE-2020-15177 : Vulnerability Insights and Analysis

In GLPI before version 9.5.2, the

install/install.php

endpoint insecurely stores user input into the database as

url_base

and

url_base_api

, leading to potential Cross-Site Scripting vulnerabilities. This issue allows attackers to execute malicious scripts and perform actions on behalf of users.

Understanding CVE-2020-15177

What is CVE-2020-15177?

CVE-2020-15177 is an unauthenticated stored Cross-Site Scripting (XSS) vulnerability in GLPI, allowing attackers to inject and execute malicious scripts.

The Impact of CVE-2020-15177

The vulnerability has a CVSS base score of 8 (High), with high impacts on confidentiality, integrity, and user interaction. Attackers can exploit this flaw to steal sensitive information and perform unauthorized actions.

Technical Details of CVE-2020-15177

Vulnerability Description

Insecure storage of user input in

url_base

and

url_base_api

in GLPI versions prior to 9.5.2 allows for unauthenticated stored XSS attacks.

Affected Systems and Versions

Product: GLPI
Vendor: glpi-project
Versions Affected: >= 0.65, < 9.5.2

Exploitation Mechanism

Attack Complexity: High
Attack Vector: Network
Privileges Required: None
User Interaction: Required
Scope: Changed

Mitigation and Prevention

Immediate Steps to Take

Upgrade GLPI to version 9.5.2 or later to apply the necessary patch.
Regularly monitor and review user input and configurations for suspicious content.

Long-Term Security Practices

Implement input validation and sanitization to prevent XSS vulnerabilities.
Educate users on safe browsing practices and the risks of executing scripts from untrusted sources.

Patching and Updates

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