Multiple Vulnerabilities in paFileDB 3.1

[Ahmad Muammar]

ECHO_ADV_09$2004

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Multiple Vulnerabilities in paFileDB 3.1
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Author: y3dips
Date: November, 26th 2004
Location: Indonesia, Jakarta
Web: http://echo.or.id/adv/adv09-y3dips-2004.txt

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Affected software description:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

paFileDB 3.1 ( PHP ARENA ) Written by Todd ( todd@phparena.net )
web : http://www.phparena.net

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Vulnerabilities:
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1. Possible to see Admin Hash Password if using sessions method

If the site using sessions to handle the authentication in the site, Attacker
could access the directory "sessions" and see the sessions in the same
time when the admin log in to manage the site (which is include admin hash password)


----- snip from manual page -----

In order to reduce compatibility problems, paFileDB 3.0 Final can use either
sessions or cookies. Cookies are recommended and enabled by default, because
there's less compatibility issues and unlike sessions, cookies don't require
any data to be stored on the server.

....
To switch between sessions and cookies, open up pafiledb.php and look for
the text:

$authmethod = "cookies"; OR :
$authmethod = "sessions";
....

Before you make the switch to sessions, make a directory called "sessions"
in your paFileDB folder (same folder as pafiledb.php) and CHMOD the directory 777.

----- snip ------

POC

Scenario :

* admin (dudul) log in to manage the site at
http://URL/pafiledb/pafiledb.php?action=admin ,then the session is recorded in
sessions directory

+ attacker access the directory directly and see the "sessions" (in a same time)

Exploit: http://URL/pafiledb/sessions/[sessionfile]

then access the listing sessions file
example : 'sess_12c9d926184e836451a15ed837bb875d'

which is contain

user|s:5:"dudul";pass|s:32:"810f9f3fbad17446a22ed2e516a12c36";
ip|s:32:"f528764d624db129b32c21fbca0cb8d6";

---- info that attacker get ----

user : dudul
pass : 810f9f3fbad17446a22ed2e516a12c36 <-- MD5

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2. Full path disclosure

A remote user can access the file directly to cause the system to display
an error message that indicates the installation path. The resulting error
message will disclose potentially sensitive installation path information
to the remote attacker.

read my artikel about path disclosure with Indonesian language at

http://ezine.echo.or.id/ezine8/ez-r08-y3dips-pathdisc.txt


POC :

http://URL/pafiledb/includes/admin/admins.php

Fatal error: Call to undefined function: adlocbar() in
/var/www/html/pafiledb/includes/admin/admins.php on line 13

http://URL/pafiledb/includes/admin/category.php

Fatal error: Call to undefined function: adlocbar() in
/var/www/html/pafiledb/includes/admin/category.php on line 232


http://URL/pafiledb/includes/team.php

Warning: main(./includes/team/login.php): failed to open stream:
No such file or directory in /var/www/html/pafiledb/includes/team.php on line 17

Warning: main(): Failed opening './includes/team/login.php' for inclusion
(include_path='.:/usr/share/pear')
in /var/www/html/pafiledb/includes/team.php on line 17

- - - - - - - - - -
FIX it :

For User and do not know how to fix the script , change php.ini file setting
then turn on log_errors , and turn off display_error

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3. Possible to Have No Admin Account

All admin have same power, so every admin could delete another admin until
there is no admin left , if all admin acount deleted, so all admin could not log
in to manage the site

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Shoutz:
~~~~~~~

~ m0by, the_day, comex, z3r0byt3, K-159, c-a-s-e, S`to @T echo/staff
~ newbie_hacker@yahoogroups.com ,
~ #e-c-h-o & #aikmel @DALNET

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Contact:
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y3dips || echo|staff || y3dips(at)echo(dot)or(dot)id
Homepage: http://y3dips.echo.or.id/

-------------------------------- [ EOF ] ---------------------------------

[Rafael San Miguel Carrasco]

I don't think this issue can be considered a vulnerability in paFileDB.
It's rather about Apache indexing the content of a web directory.
This is a misconfiguration issue in your httpd.conf.
Note that paFileDB is doing things right: it builds secure filenames
(since they cannot be guessed by trial-error in a reasonable amount of
time).

Hope this helps,

Rafael San Miguel Carrasco

>Scenario :
>
>* admin (dudul) log in to manage the site at
>http://URL/pafiledb/pafiledb.php?action=admin ,then the session is
recorded in
>sessions directory
>
>+ attacker access the directory directly and see the "sessions" (in a
same time)
>
>Exploit: http://URL/pafiledb/sessions/[sessionfile]
>


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Rafael San Miguel Carrasco
Consultor Técnico
rafael.sanmiguel@dvc.es
+ 34 660 856 647
+ 34 902 464 546
Davinci Consulting - www.dvc.es
Oficina Madrid - Parque empresarial Alvento
Via de los Poblados 1 Edificio A 6ª planta
28033 Madrid
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