CVE-2019-16763 : Security Advisory and Response

In versions 2.5.0 through 2.5.4 of Pannellum, a vulnerability allowed for potential XSS attacks due to improper URL sanitization. This issue was reported by Max Schaefer of GitHub Security Lab.

Understanding CVE-2019-16763

Pannellum versions 2.5.0 to 2.5.4 were susceptible to a Cross-site Scripting (XSS) vulnerability, potentially enabling attackers to execute malicious scripts.

What is CVE-2019-16763?

Vulnerability in Pannellum versions 2.5.0 to 2.5.4 allowed for XSS attacks through unsanitized URLs.
Attackers could embed an <iframe> element on their site using the pannellum.htm file from a targeted site, potentially accessing sensitive information.

The Impact of CVE-2019-16763

CVSS Base Score: 4.8 (Medium Severity)
Attack Vector: Network
Privileges Required: High
User Interaction: Required
Confidentiality Impact: High
Integrity Impact: Low
Attack Complexity: High
Scope: Unchanged
Vector String: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N

Technical Details of CVE-2019-16763

Pannellum's vulnerability details and affected systems.

Vulnerability Description

URLs in Pannellum 2.5.0-2.5.4 were not properly sanitized, allowing for potential XSS attacks.

Affected Systems and Versions

Affected Product: Pannellum
Affected Versions: 2.5.0, 2.5.1, 2.5.2, 2.5.3, 2.5.4

Exploitation Mechanism

Attackers could exploit the vulnerability by embedding an <iframe> element using the pannellum.htm file from the targeted site.

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2019-16763 vulnerability.

Immediate Steps to Take

Avoid hosting pannellum.htm on a domain that shares cookies with user authentication.

Long-Term Security Practices

Regularly update Pannellum to the latest version to patch known vulnerabilities.

Patching and Updates

Ensure Pannellum is updated to version 2.5.5, where the XSS vulnerability has been addressed and fixed.