CVE-2020-15500 : What You Need to Know
Learn about CVE-2020-15500, a vulnerability in TileServer GL through 3.0.0 allowing reflected XSS attacks. Find mitigation steps and best practices for long-term security.
An issue was discovered in server.js in TileServer GL through 3.0.0 where the content of the key GET parameter is reflected unsanitized in an HTTP response for the application's main page, causing reflected XSS.
Understanding CVE-2020-15500
This CVE identifies a vulnerability in TileServer GL through version 3.0.0 that allows for reflected cross-site scripting (XSS) attacks.
What is CVE-2020-15500?
CVE-2020-15500 is a security flaw in TileServer GL that enables malicious actors to execute XSS attacks by reflecting unsanitized data from a GET parameter in an HTTP response.
The Impact of CVE-2020-15500
The vulnerability can be exploited by attackers to inject malicious scripts into the application's main page, potentially leading to unauthorized access, data theft, and other security risks.
Technical Details of CVE-2020-15500
TileServer GL through version 3.0.0 is affected by the following:
Vulnerability Description
The issue lies in server.js, where unsanitized data from a key GET parameter is directly included in an HTTP response, opening the door to XSS attacks.
Affected Systems and Versions
- Product: TileServer GL
- Vendor: N/A
- Versions: up to 3.0.0
Exploitation Mechanism
Attackers can exploit this vulnerability by manipulating the key GET parameter to inject malicious scripts, which are then executed when the application's main page is loaded.
Mitigation and Prevention
To address CVE-2020-15500, consider the following steps:
Immediate Steps to Take
- Update TileServer GL to a patched version that addresses the XSS vulnerability.
- Implement input validation and output encoding to prevent unsanitized data from being reflected in responses.
Long-Term Security Practices
- Regularly monitor and audit web applications for security vulnerabilities.
- Educate developers on secure coding practices to prevent XSS and other common web application security issues.
Patching and Updates
- Stay informed about security updates for TileServer GL and promptly apply patches to mitigate known vulnerabilities.