Title:

European Security Services GPS 1.x - Multiple Vulnerabilities

Date:

2011-09-28

VL-ID:

63

Reference:

http://www.vulnerability-lab.com/get_content.php?id=63

Introduction:

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(Copy of the Vendor Homepage:
http://www.hess-security.de/das_control_center.html)

Abstract:

The Vulnerability-Lab Team discovered multiple Web Vulnerabilities on
the gps tracking system of (EES) European Security Services.

Report-Timeline:

2011-03-02: Vendor Notification
2011-04-08: Vendor Response/Feedback
2011--: Vendor Fix/Patch
2011-09-28: Public or Non-Public Disclosure

Status:

Published

Affected Products:

European Security Services GPS v1.0

Exploitation-Technique:

Remote

Severity:

Critical

Details:

1.1
An Integer Overflow vulnerability is detected on the gps tracking system
of (EES) European Security Services.
The calender application module allows an attacker to crash the
applikation service via integer overflow bug.

Vulnerable Module(s):
[+] Calender

— Exception Logs —
System.Overflow:
Arithmetic operation resulted in an overflow.
at Microsoft.VisualBasic.CompilerServices.IntegerType.FromString(String
Value)
at findMe.showData.Page_Load(Object sender, EventArgs e)
at System.Web.UI.Control.OnLoad(EventArgs e)
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Page.ProcessRequestMain(Boolean
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

1.2
Multiple persistent input validation vulnerabilities are detected on the
gps tracking system of (EES) European Security Services.
The vulnerability allows an local low privileged user account to
inject/implement malicious persistent script codes on application

side.
Successful exploitation of the vulnerability can result in session
hijacking or content request manipulation.

Vulnerable Module(s): (Persistent)
[+] Userdata Form allows
[+] Group Administration & Track ID
[+] User Password CSRF + Reset

1.2.1
Another vulnerability is located on the session handling of the gps
tracking system of (EES) European Security Services.
The passwords got transfered in plain via session cookie. Successful
exploitation can result in session hijacking without high
required user inter action.

Vulnerable Module(s):
[+] Session Handling

1.3
Attacker can bypass the auth of the login form. The vulnerability allows
remote attackers to access the
admin control panel without authorization.

Vulnerable Module(s):
[+] Login

Proof of Concept:

1.1

Reference(s):

File(s): showdata.aspx
Param(s): ?name=noacct&month=8&year=
Param(s): ?name=noacct&month=

PoC:
Insert the following example string on the calender month parameter …
-9999999999999999999999999999999

1.2

Note: To reproduce the persistent vulnerabilities inject/implement own
java or html script code on the affected vulnerable input

section.

1.2.1
URL=http://xxx.de/vemap.aspx?name=remove&gpasswd=mypasstest

<center>
<p><br><br>
<div id="LOGIN" >
<form action="" name="loginform">
<INPUT TYPE="TEXT" NAME="user" VALUE="remove" CLASS="LOGINFORM">
<INPUT TYPE="PASSWORD" NAME="passwort" Value="mypasstest" CLASS="LOGINFORM">
<INPUT TYPE="BUTTON" NAME="Login" VALUE="Login" CLASS="LOGINBUTTON"
ONCLICK="getPostData(document.loginform.user.value,document.loginform.passwort.value);"></form>

1.3
PoC:
Username: 'or 1=1–
Password: 'or 1=1–

Risk:

1.1 The security risk of the client-side arithmetic integer
overflow web vulnerability is estimated as low.
1.2 The security risk of the multiple persistent web vulnerabilities
are estimated as medium(+).
1.2.1 The security risk of the unsecure session handling (plain
transfer) vulnerability is estimated as medium(+).
1.3 The security risk of the login (auth) bypass vulnerability is
estimated as critical.

Credits:

Vulnerability Research Laboratory - Benjamin Kunz Mejri (Rem0ve)

Disclaimer:

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                        Copyright © 2011|Vulnerability-Lab

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