ElkArte 1.1.0 Cross Site Scripting

ElkArte 1.1.0 Cross Site Scripting

ElkArte 1.1.0 - Cross-site Scripting
Advisory ID: ElkArte 1.1.0 Cross Site Scripting

ElkArte 1.1.0 - Cross-site Scripting
Advisory ID: RO-18-004
Severity: Medium
Vendor: ElkArte
Product: ElkArte Forum
Version: 1.1.0


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