File disclosure vulnerability in JSFTemplating

SEC Consult Security Advisory < 20090901-0 >


title: File disclosure vulnerability in JSFTemplating,

Mojarra Scales and GlassFish Application Server v3 Admin


products: JSFTemplating (FileStreamer/PhaseListener component)

Mojarra Scales

GlassFish Application Server v3 Preview (Admin console)

vulnerable version: JSFTemplating: all versions < v1.2.11

Mojarra Scales: all versions < v1.3.2

GlassFish: v3 Preview

fixed version: JSFTemplating: v1.2.11

Mojarra Scales: v1.3.2

GlassFish: v2 is not affected according to vendor

impact: critical


found: 2009-07-01

by: J. Greil / SEC Consult /



Vendor description:


Templating for JavaServer™ Faces Technology plugs into JavaServer™ Faces to

make building pages and components easy.


Creating pages or components is done using a template file. JSFTemplating's

design allows for multiple syntaxes, currently it supports 2 of its own plus

most of the Facelets syntax. All syntaxes support all of JSFTemplating's

features such as PageSession, Events & Handlers, dynamic reloading of page

conent, etc.



also see:



Vulnerability overview/description:


The JSFTemplating FileStreamer functionality (when using the PhaseListener),

basically used for including static or dynamic content, such as Yahoo UI API

files with Mojarra Scales, is vulnerable to

* file disclosure and also allows an attacker

* to retrieve directory listings of the whole server


Furthermore Mojarra Scales and the GlassFish Application Server (v3 Preview)

Admin console are using vulnerable components too.


JSFTemplating/FileStreamer can be exploited to read sensitive application data

on the whole server depending on the configuration. One tested server allowed

us to access all files on the server (with rights of the webserver user),

another server was restricted to files within the webroot (but including

WEB-INF) - it might depend on the Java Security Model or filesystem rights.


An attacker is able to gain sensitive data such as configuration files

(WEB-INF/web.xml), the whole source code of the application or other sensitive

data on the server.


Furthermore it is possible to retrieve directory listings of directories on

the whole server and the webroot by specifying a directory instead of a file.



Proof of concept:


The URLs to exploit this vulnerability may differ from server to server. The

vulnerable HTTP parameters are usually named "filename" or "file".


By specifying the following URLs an attacker gains access to sensitive

configuration files, source code or other possibly sensitive files:




By using an empty value for the file/filename parameter, a directory listing of

the webroot is being shown. Directory traversal is also possible but it depends on the

installation/configuration whether it is possible to access data outside the









Vulnerable versions:



* all versions < v1.2.11


Mojarra Scales:

* all versions < v1.3.2



* v3 Preview (Admin console)


According to the vendor, GlassFish v2 does not use vulnerable components.


Vendor contact timeline:


2009-07-07: Contacting the developers of JSFTemplating by email.

2009-07-07: Very fast response from the developers by email and IRC, initial

attempts to fix the issue were being made

2009-07-08: Agreed on taking a further look into the issue by the end of July

2009-07-30: Contacted the developers again, they need more time

2009-08-10/13: Asked the developers for any news

2009-08-14: Anwser that the fix will make it into next release

2009-08-31: Fixes for JSFTemplating and Mojarra Scales available

2009-09-01: Coordinated release date


Special thanks to Jason and Ken!




* Upgrade to the latest version of JSFTemplating, v1.2.11 has the fix:


CVS commit logs with some information regarding new security features can be

found here:



* Upgrade to the latest version of Mojarra Scales, v1.3.2 has the fix:



* GlassFish: Use the current stable version v2 or see workaround section for v3.




GlassFish v3 Preview: Use strong passwords for the GlassFish Admin console and

restrict access to the Admin console port (4848).


Advisory URL:




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information, please refer to


EOF J. Greil / @2009