PT-2012-32: User data disclosure in Sanuel Family

Vulnerable software

Sanuel Family
Version: 11.1.0 and earlier

Link:
http://www.sanuel.com/ru/family/
https://play.google.com/store/apps/details?id=com.familymobile

Severity level

Severity level: High
Impact: User data disclosure
Access Vector: Remote

CVSS v2:
Base Score: 8.5
Vector: (AV:N/AC:L/Au:N/C:C/I:P/A:N)

CVE: not assigned

Software description

Sanuel Family is a software used for personal accounting. The program allows you to carry on family finances, fiscal accounting for small businesses, and also make analysis and accounting of your investments.  Family Mobile application synchronizes data from mobile and personal computers.

Vulnerability description

The specialists of the Positive Research center have detected "'User data disclosure" vulnerability in Sanuel Family.

The vulnerability is detected in the data exchange protocol used between mobile and desktop applications and synchronization server.
An attacker is able to intercept user credentials and expenditures, and also access information about user accounts.

User credentials: login and password (in POST request) and also expenditures are sent in XML in clear text. As traffic is intercepted, an attacker is able to get the data in a clear text. Though the data is rather depersonalized, i.e. it is linked with user's login, an attacker can use it to get information about personal finances.

POST requests:
Full request URI: http://www.sanuel.com/sync/syncpost.php
Line-based text data: application/x-www-form-urlencoded
command=auth&login=HERE_GOES_MY_USERNAME&pass=here_goes_my_pass
---------------
Full request URI: http://www.sanuel.com/sync/syncapp.php
command=cats&login=HERE_GOES_MY_USERNAME&pass=here_goes_my_pass&data=<?xml version="1.0" encoding="windows-1251" standalone="yes" ?><data><categories><category><name>\301\340\341\363\370\352\340</name><type>2</type></category><category><name>\301\37

How to fix

No solution

Advisory status

27.08.2012 - Vendor is notified
27.08.2012 - Vendor gets vulnerability details
26.09.2012 - Vulnerability details were sent to CERT
03.10.2012 - Public disclosure

Credits

The vulnerability has discovered by Denis Gorchakov, Positive Research Center (Positive Technologies Company)

References

http://en.securitylab.ru/lab/PT-2012-32

Reports on the vulnerabilities previously discovered by Positive Research:

http://ptsecurity.com/research/advisory/
http://en.securitylab.ru/lab/

Threatscape