Page2Flip 2.5 Insecure Direct Object Reference

2015-08-25T00:00:00
ID PACKETSTORM:133307
Type packetstorm
Reporter Dr. Erlijn van Genuchten
Modified 2015-08-25T00:00:00

Description

                                        
                                            `-----BEGIN PGP SIGNED MESSAGE-----  
Hash: SHA512  
  
Advisory ID: SYSS-2015-029  
Product: Page2Flip  
Vendor: w!ssenswerft GmbH  
Affected Version(s): Premium App 2.5, probably also in Business App   
and Basic App, and in lower versions  
Tested Version(s): Premium App 2.5  
Vulnerability Type: Insecure Direct Object Reference (CWE-932)  
Risk Level: Medium  
Solution Status: Open  
Vendor Notification: 2015-06-29  
Solution Date:   
Public Disclosure:   
CVE Reference: Not yet assigned  
Author of Advisory: Dr. Erlijn van Genuchten (SySS GmbH)  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
Overview:  
  
With the Page2Flip Web application, it is possible to create e-papers in  
PDF format that can be flicked through digitally. Such e-papers can be  
used for magazines, catalogues, flyers, etc. (see [1]).  
  
The Page2Flip application allows preview content to be accessed by  
unauthenticated users.  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
Vulnerability Details:  
  
The SySS GmbH identified a vulnerability in the "preview" functionality  
of the Page2Flip application.  
  
Pageflip preview content can be accessed by unauthenticated users if  
a valid URL is known.  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
Proof of Concept (PoC):  
  
By knowing or guessing a valid URL for pageflip preview content, an  
unauthenticated user can access this data.  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
Solution:  
  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
Disclosure Timeline:  
  
2015-06-23: Vulnerability discovered  
2015-06-29: Vulnerability reported to vendor  
2015-07-07: Reported vulnerabilities again as the vendor did not respond   
to the first e-mail  
2015-07-14: Reminder sent concerning reported vulnerabilities  
2015-08-24: Public release of security advisory according to the SySS  
Responsible Disclosure Policy  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
References:  
  
[1] Page2Flip homepage  
http://page2flip.de/  
[2] SySS Responsible Disclosure Policy  
https://www.syss.de/en/news/responsible-disclosure-policy/  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
Credits:  
  
This security vulnerability was found by Dr. Erlijn van Genuchten of the  
SySS GmbH.  
  
E-Mail: erlijn.vangenuchten@syss.de  
Public Key: https://www.syss.de/fileadmin/dokumente/Materialien/PGPKeys/Erlijn_vanGenuchten.asc  
Key ID: 0xBD96FF2A  
Key Fingerprint: 17BB 4CED 755A CBB3 2D47 C563 0CA5 8637 BD96 FF2A  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
Disclaimer:  
  
The information provided in this security advisory is provided "as is"   
and without warranty of any kind. Details of this security advisory may  
be updated in order to provide as accurate information as possible. The  
latest version of this security advisory is available on the SySS Web  
site.  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
Copyright:  
  
Creative Commons - Attribution (by) - Version 3.0  
URL: http://creativecommons.org/licenses/by/3.0/deed.en  
-----BEGIN PGP SIGNATURE-----  
Version: GnuPG v1  
  
iQIcBAEBCgAGBQJV2x3jAAoJEAylhje9lv8qq3oP/RfufC/hsQJ/VYU/wixiu5/u  
47AfN3p+JwqRF70glzNxm4cnDSl4uN0nQE0i3KFXvQ+ykr0IAMtj0/WBcNfqQ4z9  
Dwn09k/YrBZ4gTUycRksrd+YchWD8GFQqJK+gw7wduqe/YnPrFVC4N1GLr3PsFNk  
EF95rLrQSYT4BtAzIAIGUau3dgDIR1/dNRHL6lEreXDbDIzsTitoN5FFUpyv60s9  
FENgi9aUTLqumD35eEaon/OBsIrvb5iqMuxZIrouyOC/l20tVolNq4Szjr0HnVTm  
AWUT4+Ek1tojVWaXruaAgb5bk/VxoMp/BHjk6KofqyWypoAUuavwkP7z2OKLsc+6  
vavHhXimwm5MVLXkMAy6Y9Exq6gn0zjr4j3upaunw3z9QIVmnGWxyFFqbvEs168z  
S5Kua+bWpK8cz1398xzeC2BGFSO6vFLzy9w6OlgRvIZJF5JyXMvxGMNv/JKzBPvG  
eEo0cCCCIYWAzo08QByVGu44Q/62oGoBI2hKPmKpRFlc3n5SKwMSQOHkI4CWJNDY  
HsLhw/fqgmKvU/CcG44yKjIBAH1EqNvK5MU9w7yzZv4DJ78zcxZCj5xua83EOujC  
P49BBIyRCcXpD+mAj95vfc2k/lWi9zc5NqPNDma+9YRcIqDxDS/VGgHDFMLwo57i  
gTFe4C5ewUawBrcaAPFc  
=y0ne  
-----END PGP SIGNATURE-----  
`