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Category:   Application (Generic)  >   Justice Guestbook Vendors:   Justice Media
Justice Guestbook Input Validation Flaws Permit Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1006412
SecurityTracker URL:  http://securitytracker.com/id/1006412
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Mar 29 2003
Impact:   Disclosure of authentication information, Disclosure of system information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information, User access via network
Exploit Included:  Yes  
Version(s): 1.3
Description:   An input validation vulnerability was reported in Justice Guestbook (JGB). A remote user can conduct cross-site scripting attacks. A remote user can also determine the installation path.

F0KP reported that the 'jgb.php3' script does not filter HTML code from user-supplied input in the $name, $homepage, $aim, $yim, $location, and $comment variables. A remote user can submit crafted contents for those variables so that, when a target user views the guestbook entry, arbitrary scripting code will be executed by the target user's browser. The code will originate from the site running the JGB guest book software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

A remote user can also directly request the 'cfooter.php3' script to cause the system to generate an error message that discloses the installation path of the software:

http://[target]/jgb_eng_php3/cfooter.php3

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the Justice Guestbook, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

A remote user can determine the installation path.

Solution:   No solution was available at the time of this entry.
Vendor URL:  www.justice-media.de/index.php?site=jgb (Links to External Site)
Cause:   Exception handling error, Input validation error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


 Source Message Contents

Subject:  Justice Guestbook 1.3 vulnerabilities



=:=:=::=:=:=::=:=:=::=:=:=::=:=:=::=:=:=::=:=:=::=
topic: Justice Guestbook 1.3 vulnerabilities 
product: Justice Guestbook 1.3
vendor: http://www.justice-media.de
risk: high
date: 03/29/2k3
discovered by: euronymous /F0KP 
advisory urls: http://f0kp.iplus.ru/bz/017.en.txt
               http://f0kp.iplus.ru/bz/017.ru.txt 
=:=:=::=:=:=::=:=:=::=:=:=::=:=:=::=:=:=::=:=:=::=

description
-----------

1) script injection

jgb.php3 script doesnt check the variables $name
$homepage, $aim, $yim, $location and $comment. 
so, u can insert there any evil html, javascript 
code in these fields.

http://hostname/jgb_eng_php3/jgb.php3


2) path disclosure

if u call the cfooter.php3 script, that u get an 
error message, that contains full system path of 
guestbook:

http://hostname/jgb_eng_php3/cfooter.php3 

=================================================================
Fatal error: Call to undefined function: getsets() in 
/homepages/12/d13457710/htdocs/underground/guestbook/cfooter.php3 
on line 31
=================================================================


shouts: R00tC0de, DWC, DHG, HUNGOSH, security.nnov.ru,
all russian security guyz!! to kate especially )) 
f*ck_off: slavomira and other dirty ppl in *.kz $#%&^!

================
im not a lame,
not yet a hacker
================




 
 


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