Overview #
A Cross-site Scripting (XSS) vulnerability exists in ElkArte Forum version 1.1.0. The vulnerability allows remote attackers to inject arbitrary web script or HTML.
Vulnerability Details #
Affected Versions: 1.1.0 and earlier
Root Cause: Insufficient input validation and output encoding allows attackers to inject malicious scripts.
Exploitation Requirements #
- No authentication required
- Victim must visit a crafted URL or page
Impact #
Remote attackers can exploit this vulnerability to:
- Steal forum user session cookies
- Perform actions on behalf of users
- Post malicious content
Proof of Concept #
Details available upon request.
Solution #
Upgrade to a patched version of ElkArte that includes proper input sanitization.
References #
- Vendor notification sent
Timeline #
2018-01-01— Discovered
Credits: Omar Kurt