S21SEC-017-en - Vignette /vgn/legacy/save SQL access

[S21SEC <vul-serv () s21sec com>]

###############################################################
ID: S21SEC-017-en
Title: Vignette /vgn/legacy/save SQL access
Date: 15/03/2003
Status: Vendor contacted and solution available
Scope: Execution of SQL SELECT calls
Platforms: All
Author: rpinuaga
Location: http://www.s21sec.com/es/avisos/s21sec-017-en.txt
Release: External
###############################################################

                                S 2 1 S E C

                           http://www.s21sec.com

                   Vignette /vgn/legacy/save SQL access


About Vignette
--------------

Vignette develops Content Management and Application Portal Software.


Description of vulnerability
----------------------------

Vignette Software installs by default some help applications under de /vgn web directory.

One of this utilities is the Vignette Legacy Tool. This application is accessed through it's main template 
/vgn/legacy/edit. This template is protected by the [ NEEDS LOGIN ] directive and it's not accesible for 
unauthenticated users.

The problem is that the real job of this application is carried by the /vgn/legacy/save template, which is not 
protected.

The only check that is done is in the RECORD directive. But this check is easyly bypassed.

The check only looks for an vgn_creds cookie, but it does not check it's content. So what is only needed to do a 
succesful query is to put some random value on this cookie.

This way it's possible to do a SELECT query, over any SQL table that is accesible from the Vignette user that has 
access to the database.


Affected Versions and platforms
-------------------------------

This vulnerability has been tested in Vignette StoryServer 4, StoryServer 5 and Vignette V/5. But it seems that all 
currently avaliable versions are vulnerable.


Solution
--------

Insert a [ NEEDS LOGIN ] directive in the top of the source code for the /vgn/legacy/save template.
Vignette users should procceed to contact vignette throught the standard channels VOLS etc in order to get a solution.


Additional information
----------------------

These vulnerabilities have been found and researched by:

 Ramon Pinuaga Cascales         rpinuaga () s21sec com

You can find the last version of this warning in:

        http://www.s21sec.com/es/avisos/s21sec-017-en.txt

And other S21SEC warnings in http://www.s21sec.com/es/avisos/