===================================================================== Sceptive Security Advisory Synopsis: Bilyoner mobile apps prone to various SSL/TLS attacks Product: Various mobile applications Advisory URL: http://sceptive.com/p/bilyoner-mobile-apps-prone-to-various-ssltls-attacks Advisory number: CVE-2014-3750 Issue date: 2014-04-02 ===================================================================== 1. Summary: Bilyoner [1] is an online betting platform for various betting options on idda [2] , spor toto [3], milli piyango [4], tjk [5]. We have found that mobile apps vulnerable to SSL/TLS attacks which eventually lets attackers to gain sensitive information and hijack user sessions. 2. Description: On misconfigured network environments it is possible to redirect HTTPS packets over MITM tools for SSL sessions. When we redirected our network on such a configuration we have observed that app sends/receives user data unecrypted. REQUEST { "password": "333444", "sessionId": "9331b4c44edf7c72f4963bc1799416bd071b5eb2aa049ad7ce968b06965f444e", "username": "12312312" } And also session-id's are vulnerable for attackers to use on their own configurations to hijack other users' sessions. Such as; RESPONSE { "bilyonerCookies": { "JSESSIONID": "RQdFTcnPydRypLXc71kXhYjBtN5p5sGT31GN4hvRlsN8qTz2GQ2T!-1656694263", "NSC_wtfswfs-ttm": "ffffffffc3a0840e45525d5f4f58455e445a4a423660" }, "bilyonerSessionId": "C1yTTcnP2wSnwyV2gstRkhrsBh8dsqJfvCYBFHqTGvVwhZSYhsJM!-1656694263!1394403087638", "sessionId": "9331b4c44edf7c72f4963bc1799416bd071b5eb2aa049ad7ce968b06965f444e" } 3. Solution: For Android apps it's advised to upgrade 2.3.1. For IOS platforms 4.6.2 is available.. 4. Links: [1] http://www.bilyoner.com/ [2] http://www.iddaa.com/ [3] https://www.sportoto.gov.tr/ [4] http://www.millipiyango.gov.tr/ [5] http://www.tjk.org/EN 5. Contact: Harun Esur Copyright 2014 Sceptive =====================================================================