CVE-2018-7188 : Security Advisory and Response

Tiki versions prior to 18 have an XSS vulnerability that can lead to an authenticated user gaining administrator privileges by exploiting an SVG image.

Understanding CVE-2018-7188

Tiki versions before 18 are susceptible to an XSS vulnerability that can be exploited through an SVG image, potentially granting unauthorized access.

What is CVE-2018-7188?

This CVE refers to a security flaw in Tiki versions preceding 18, allowing an authenticated user to escalate their privileges to administrator level by leveraging a malicious SVG image.

The Impact of CVE-2018-7188

The vulnerability enables an authenticated user to obtain administrator privileges by tricking an administrator into opening a wiki page containing a compromised SVG image.

Technical Details of CVE-2018-7188

Tiki versions before 18 are affected by an XSS vulnerability that can be exploited through an SVG image.

Vulnerability Description

The security flaw in Tiki versions prior to 18 permits an authenticated user to elevate their privileges to administrator status through a malicious SVG image.

Affected Systems and Versions

Product: Tiki
Vendor: N/A
Versions: All versions before 18

Exploitation Mechanism

The vulnerability is specifically associated with the filegallib.php file located in the lib/filegals directory within Tiki versions prior to 18.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2018-7188.

Immediate Steps to Take

Upgrade Tiki to version 18 or above to mitigate the XSS vulnerability.
Educate administrators and users about the risks associated with opening suspicious SVG images.

Long-Term Security Practices

Regularly update and patch Tiki installations to ensure the latest security fixes are in place.

Patching and Updates

Stay informed about security advisories and promptly apply patches released by Tiki to address vulnerabilities.