YingZhi Python Directory Traversal and Arbitrary File Upload Vulnerabilities

[larry Cashdollar <larry0 () me com>]

YingZhi Python Programming Language for iOS

Vendor: XiaoWen Huang, YingZhi Python for iOS.

Ver 1.9.

Product Websites
http://sosilen.blog.163.com
http://www.iphoneappstorm.com/iphone-apps/utilities/com.yingzhi.python/yingzhipython.php?id=493505744 YingZhi

Description:
Python Interpreter is a native python development application for the iPad/iPhone. It is available for iOS 4 and above.

The product is packaged with its own httpd and ftpd servers. Enabling the local daemons for development 
by Touching Computer<->This Machine starts up an httpd server and ftpd server, both daemons are bound to 
device IP not localhost.

Vulnerabilities:

httpd server allows upload of arbitrary files to root WWW directory.

Browsing to http://<target_ip>:8080/ presents an index page in which anyone can upload files to the web servers root 
directory.

ftp server vulnerable to ../ bug

The ftp server doesn't sanitize user input and allows remote users to read and possibly write to the devices storage.

ftp://192.168.0.24:10000/../../../../../../../private/etc/passwd

The ftp server doesn't bother authenticating users, any username/password combination will allow you in.

Larry Cashdollar @lcashdol

advisory with pictures : http://vapid.dhs.org/advisories/python_for_ipad.html 
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