CVE-2019-1000015 : What You Need to Know

Chamilo-lms version 1.11.8 and earlier contain a Cross Site Scripting (XSS) vulnerability that allows attackers to perform XSS attacks and steal cookies.

Understanding CVE-2019-1000015

This CVE involves a security vulnerability in Chamilo-lms versions 1.11.8 and earlier that can be exploited for XSS attacks.

What is CVE-2019-1000015?

The vulnerability in several files of Chamilo-lms allows attackers to execute XSS attacks by injecting malicious code, potentially leading to cookie theft.

The Impact of CVE-2019-1000015

Exploiting this vulnerability enables attackers to send messages with XSS code to the Administrator, potentially compromising sensitive information.

Technical Details of CVE-2019-1000015

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability exists in files like main/messages/new_message.php, main/social/personal_data.php, and others, allowing attackers to inject XSS payloads.

Affected Systems and Versions

Product: Chamilo-lms
Vendor: N/A
Versions affected: 1.11.8 and earlier

Exploitation Mechanism

Attackers inject XSS payloads into the subject field of a ticket to trigger the XSS attack.
Payload example: "<svg/onload=alert(1)>"
Successful exploitation allows attackers to obtain cookies of users with ticket viewing permissions.

Mitigation and Prevention

Protect systems from CVE-2019-1000015 with the following measures.

Immediate Steps to Take

Update Chamilo-lms to version 1.11.x with commit 33e2692a37b5b6340cf5bec1a84e541460983c03.
Educate users on avoiding clicking on suspicious links or messages.

Long-Term Security Practices

Regularly monitor and audit system logs for unusual activities.
Implement web application firewalls to filter and block malicious traffic.

Patching and Updates

Apply security patches promptly to mitigate known vulnerabilities.