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Category:   Application (Generic)  >   JBrowser Vendors:   jpage.free.fr
JBrowser Discloses Files on the System to Remote Users
SecurityTracker Alert ID:  1008909
SecurityTracker URL:  http://securitytracker.com/id/1008909
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Feb 3 2004
Impact:   Disclosure of system information, Disclosure of user information, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): prior to 2.3 for one flaw; 2.4 and prior versions for another flaw
Description:   Two vulnerabilities were reported in JBrowser. A remote user can view arbitrary files with the privileges of the web service. A remote user can also access admin scripts in the default configuration.

Himeur Nourredine reported that the 'browser.php' script does not validate user-supplied input in the 'directory' variable. A remote user can supply a specially crafted URL to view specified files on the target system that are located outside of the intended directory.

A demonstration exploit URL is provided:

http://[target]/browser.php?directory=[ATTACKER_SPECIFIED_PATH]

It is also reported that the default installation does not restrict access to the '_admin' directory. A remote user can reportedly execute scripts in this directory. A remote user may be able to upload arbitrary files to the target system or access to files on the target system.

Some demonstration exploit URLs are provided:

http://[target]/_admin/
http://[target]/_admin/list_all.php?folder=../
http://[target]/_admin/upload.php

Impact:   A remote user can view specified files on the target system with the privileges of the target web service.

A remote user can access certain administrative scripts.

Solution:   The vendor has reportedly corrected the directory traversal flaw in version 2.3 and later versions, available at:

http://jpage.free.fr/j/download/jbrowser_v24.zip

No vendor solution was available for the _admin directory access flaw at the time of this entry. However, the report suggests that you can use web server access controls to restrict access to the '_admin' directory.

Vendor URL:  jpage.free.fr/j/index_fr.php?p=jscripts#jbrowser (Links to External Site)
Cause:   Access control error, Input validation error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


 Source Message Contents

Subject:  JBrowser vulnerabilities


Himeur Nourredine reported two vulnerabilities in JBrowser, according to SecurityFocus.

It is reported that the 'browser.php' script does not validate user-supplied input in the 
'directory' variable.  A remote user can supply a specially crafted URL to view specified 
files on the target system that are located outside of the intended directory.

A demonstration exploit URL is provided:

http://[target]/browser.php?directory=[ATTACKER_SPECIFIED_PATH]

The report indicates that the vendor has issued a fixed version (2.3).

It is also reported that the default installation does not restrict access to the '_admin' 
directory.  A remote user can reportedly execute scripts in this directory.  A remote user 
may be able to upload arbitrary files to the target system or access to files on the 
target system.

Some demonstration exploit URLs are provided:

http://www.example.org/_admin/
http://www.example.org/_admin/list_all.php?folder=../
http://www.example.org/_admin/upload.php

No vendor solution was available for this flaw.  However, the report suggests that you can 
use web server access controls to restrict access to the '_admin' directory.

Vendor URL:  http://jpage.free.fr/j/



 
 


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