WhiteHouse Gov Service - Persistent Web Vulnerability

Type vulnerlab
Reporter Vulnerability Research Laboratory - Alexander Fuchs (F0x23) & Benjamin Kunz Mejri (Rem0ve)
Modified 2011-11-03T00:00:00


                                            Document Title:
WhiteHouse Gov Service - Persistent Web Vulnerability

References (Source):

Release Date:

Vulnerability Laboratory ID (VL-ID):

Product & Service Introduction:

Abstract Advisory Information:
The vulnerability-lab researcher (F0x23 & Rem0ve) discovered a persistent script code injection vulnerability on the WhiteHouse Gov website.

Vulnerability Disclosure Timeline:
2011-11-01:     Vendor Notification
2011-11-03:     Vendor Response/Feedback
2011-11-04:     Vendor Fix/Patch
2011-11-04:     Public or Non-Public Disclosure

Discovery Status:

Exploitation Technique:

Severity Level:

Technical Details & Description:
A persistent script code injection vulnerability is detected on the WhiteHouse Gov website. The vulnerability allows remote 
attackers to implement/inject own malicious script code (persistent) on a web service main module of the website. The successful 
exploitation of the vulnerability results in hijacking of user-,admin- or -backend sessions, manipulation of profile content, 
redirect to external malicious targets(websites), defacement & can lead to malware infiltration via petition.

Vulnerable Module(s):
				                        [+] Profil - Location & Name Input + Output

Affected Module(s):
							[+] Petition - Add, Share & Sign


Proof of Concept (PoC):
The vulnerabilities can be exploited by remote attackers. For demonstration or reproduce ...

<div class="entry entry-creator ">  
    <div class="title">creator</div>    
    <div class="name">Bernd N</div><!--/name-->
    <div class="details">
      October 31, 2011<br>
      Signature # 1    </div>

Reference: https://wwws.whitehouse.gov/petitions/!/petition/hey/VLsNrtR1

<span>City: </span></label>
 <input maxlength="255" name="profile_city" id="edit-profile-city" size="60" value="VA" class="form-text" type="text">
<input name="form_id" id="edit-user-profile-form" value="user_profile_form" type="hidden">
<div class="form-item clearfix" id="edit-profile-state-wrapper">
 <label for="edit-profile-state"><span>State: </span>

Reference: https://wwws.whitehouse.gov/user/5034619/edit/Personal%20Information


Solution - Fix & Patch:
1. Parse the input fields and restrict characters like () > < \" / to prevent against script tag include.
2. Parse also the vulnerable not filtered output section of name & city were the script code will be executed at the end.
3. Possibility: Implement a specific exception-handling or filter mechanism to prevent against future script code injections.

Security Risk:
The security risk of the persistent script code inject is estimated as high(+).

Credits & Authors:
Vulnerability Research Laboratory -  Alexander Fuchs (F0x23) &  Benjamin Kunz Mejri (Rem0ve)

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