[Full-disclosure] Air Gallery 1.0 Air Photo Browser - Multiple Vulnerabilities

[Vulnerability Lab <research@xxxxxxxxxxxxxxxxxxxxx>]

Document Title:
===============
Air Gallery 1.0 Air Photo Browser - Multiple Vulnerabilities


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1165


Release Date:
=============
2013-12-09


Vulnerability Laboratory ID (VL-ID):
====================================
1165


Common Vulnerability Scoring System:
====================================
6.5


Product & Service Introduction:
===============================
View your entire photo library in a standard web browser! Show off your photos 
easily! Excellent for showing slides 
during a meeting, browsing through friends photos and more!

- View your photos in a browser over WiFi
- Optional password protection
- Show albums, events, faces (your photo library needs to have these albums in 
order to show it)
- One click slideshows
- Easy navigation
- Supports bonjour publishing

(Copy of the Homepage: https://itunes.apple.com/app/id499204622 )


Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered multiple vulnerabilities 
in the SharkFood Air Gallery 1.0 Air Photo Browser mobile application for Apple 
iOS.


Vulnerability Disclosure Timeline:
==================================
2013-12-09:    Public Disclosure (Vulnerability Laboratory)


Discovery Status:
=================
Published


Affected Product(s):
====================
SharkFood
Product: Air Gallery - Air Photo Browser iOS 1.0


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


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


Technical Details & Description:
================================
1.1
A local command/path injection web vulnerabilities has been discovered in the 
SharkFood Air Gallery 1.0 Air Photo Browser mobile application for Apple iOS.
A local command inject vulnerability allows attackers to inject local commands 
via vulnerable system values to compromise the apple mobile iOS application.

The vulnerability is located in the vulnerable `devicename` value of the file 
dir und sub category `header` (header-title) section. Local attackers are 
able to inject own malicious system specific commands or path value requests as 
the physical iOS hardware devicename. The execute of the injected 
command or path request occurs with persistent attack vector in the index and 
sub category list of the web interface. The security risk of the local 
command/path inject vulnerability is estimated as high(-) with a cvss (common 
vulnerability scoring system) count of 6.5(+)|(-)6.6.

Exploitation of the command/path inject vulnerability requires a low privileged 
iOS device account with restricted access and no user interaction. 
Successful exploitation of the vulnerability results in unauthorized execute of 
system specific commands or unauthorized path requests.


Vulnerable Module(s):
                                [+] Content > header-title

Vulnerable Parameter(s):
                                [+] devicename

Affected Module(s):
                                [+] Index- File Dir Listing
                                [+] Sub Folder/Category - File Dir Listing



1.2
A local command/path injection web vulnerability has been discovered in the 
SharkFood Air Gallery 1.0 Air Photo Browser mobile application for Apple iOS.
A local command inject vulnerability allows attackers to inject local commands 
via vulnerable system values to compromise the apple mobile iOS application.

The second local command/path inject vulnerability is located in the in the 
album name value of the web-interface index and sub category list module.
Local attackers are able to manipulate iOS device `photo app` (default) album 
names by the inject of a payload to the wrong encoded albumname input fields. 
The execute of the injected command/path request occurs in the album sub 
category list and the main album name index list. The security risk of the 
command/path inject vulnerabilities are estimated as high(-) with a cvss 
(common vulnerability scoring system) count of 6.6(+).

Exploitation of the command/path inject vulnerability requires a local low 
privileged iOS device account with restricted access and no direct user 
interaction. 
Successful exploitation of the vulnerability results unauthorized execution of 
system specific commands or unauthorized path requests.

Vulnerable Module(s):
                                [+] Poster > group-header > groupinfo

Vulnerable Parameter(s):
                                [+] album name

Affected Module(s):
                                [+] Index - Item Name List
                                [+] Sub Category - Title List


Proof of Concept (PoC):
=======================
1.1
The local command/path inject web vulnerability can be exploited by local 
attackers with restricted or low privileged device user account 
without user interaction. For security demonstration or to reproduce the 
vulnerability follow the provided information and steps below.


1. Install the vulnerable mobile application to your ios device (iphone, mac or 
ipad)
2. Open the settings menu in the mobile iOS and click the info button to have 
an influence on the devicename value
3. Now change the local devicename value to your own script code with a frame + 
local command inject settings or path request
4. Save the settings and open the vulnerable mobile application
5. Start the web-server via wifi (standard localhost:8080 passwd:empty)
6. Open with another computer via browser the local service, the local command 
inject or unauthorized path request occurs in the header section
7. Successful reproduce of the local command/path inject vulnerability!


PoC: Content > header-title > devicename

<div id="wrapper" class="fullSize">
<!-- header -->
<div id="header" class="content">
<span id="header-title">Air Photo Browser - devicename bkm€37 
>"<<>"x<../[COMMAND/PATH INJECT VULNERABILITY!]></span></div>
<!-- column layout , thanks to Mattew James Tailor! - 
http://matthewjamestaylor.com/ --> ;)
                        <div class="colmask leftmenu" id="content-wrapper">
                                <div class="colright">
                                        <div class="col1wrap">
                                                <!-- right column -->
                                                <div class="col1">
                <div style="" id="group-header" class="content 
ui-helper-hidden">
                <img id="group-poster" class="control-button" 
src="images/placeholder.png">
        <h3 id="group-info"></h3>
</div>


1.2
The local command/path inject web vulnerability can be exploited by local 
attackers with restricted or low privileged device user account 
without user interaction. For security demonstration or to reproduce the 
vulnerability follow the provided information and steps below.


1. Install the vulnerable mobile application to your ios device (iphone, mac or 
ipad)
2. Open the default photo app in the mobile iOS and click the edit or add 
button to have an influence on the local albumname value
Note: Now the attackers is able to change an exisiting albumname or can add a 
new album (name) 
3. Include your own script code with a frame + local command inject settings or 
unauthorized path request
4. Save the settings and open the vulnerable mobile application
5. Start the web-server via wifi (standard localhost:8080 passwd:empty)
6. Open with another computer via web-browser the local service (GET method - 
index)
Note: The local command inject or unauthorized path request occurs in the 
groupinfo of the group-header section
7. Successful reproduce of the local command/path inject vulnerability!


PoC: Poster > group-header > groupinfo

<div class="col1">
<div style="display: block;" id="group-header" class="content ui-helper-hidden">
<img id="group-poster" class="control-button" 
src="/api/poster/?group=0&subgroup=0">
<h3 id="group-info"><b>Photo Library</b> <span id="group-count">0 
photos</span></h3>
</div><div style="height: 380.6px;" id="group-content" class="content 
airGallery">
There are no photos in this album</div>


Reference(s):
http://localhost:8080/


Solution - Fix & Patch:
=======================
1.1
The first local command/path inject web vulnerability can be patched by a 
secure encode and parse of the vulnerable devicename value in 
the web interface header section.

1.2
The second local command/path inject web vulnerability can be patched by a 
secure parse of the vulnerable albumname value
in the web interface data context listing section.


Security Risk:
==============
1.1
The security risk of the local command/path inject web vulnerability is 
estimated as high(-).
Local attackers are able to inject own system specific commands but can also 
unatuhorized request local system path values to 
compromise the apple iOS web-application.

1.2
The security risk of the second local command/path inject web vulnerability is 
estimated as high(-). Local attackers are able to 
inject own system specific commands but can also unatuhorized request local 
system path values to 
compromise the apple iOS web-application.


Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri 
(bkm@xxxxxxxxxxxxxxxxx) [www.vulnerability-lab.com]


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