CVE-2017-20139 in Movie Portal Script
Summary
by MITRE • 07/22/2022
A vulnerability was found in Itech Movie Portal Script 7.36. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the file /show_news.php. The manipulation of the argument id with the input AND (SELECT 1222 FROM(SELECT COUNT(*),CONCAT(0x71786b7a71,(SELECT (ELT(1222=1222,1))),0x717a627871,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.CHARACTER_SETS GROUP BY x)a) leads to sql injection (Error). The attack can be launched remotely. The exploit has been disclosed to the public and may be used.
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Analysis
by VulDB Data Team • 11/04/2022
This vulnerability exists in the Itech Movie Portal Script version 7.36 and represents a critical sql injection flaw that can be exploited remotely through the /show_news.php file. The attack vector specifically targets the id parameter where an attacker can manipulate input to execute malicious sql commands. The exploitation technique employs a sophisticated error-based sql injection approach that leverages the mysql information schema to extract data through error messages. This method utilizes the elt function combined with a boolean condition to trigger specific error responses that reveal database information, making it particularly dangerous as it can be used to extract sensitive data from the underlying database.
The technical implementation of this vulnerability follows established patterns for error-based sql injection attacks and aligns with common attack techniques documented in the attack pattern taxonomy. The payload structure demonstrates knowledge of mysql database internals and utilizes the information schema tables to gather structural information about the database. This particular attack method relies on the RAND function and FLOOR operations combined with GROUP BY clauses to cause errors that contain the extracted data. The vulnerability demonstrates characteristics consistent with CWE-89 sql injection flaws and represents a classic example of how parameter validation failures can lead to complete database compromise. The attack can be executed without requiring authentication or local access, making it particularly dangerous for web applications.
The operational impact of this vulnerability is severe as it allows remote attackers to gain unauthorized access to the underlying database system. Successful exploitation could result in complete data theft including user credentials, personal information, and application data. The vulnerability's critical rating reflects its potential for widespread damage across multiple systems and the ease with which it can be exploited. Attackers can leverage this flaw to perform data manipulation, privilege escalation, and potentially establish persistent access to the compromised system. The public disclosure of the exploit means that any system running the vulnerable software is immediately at risk without proper mitigation measures.
Mitigation strategies should focus on implementing comprehensive input validation and parameterized queries to prevent sql injection attacks. The primary defense involves sanitizing all user inputs and using prepared statements with proper parameter binding to eliminate the risk of sql command injection. System administrators should immediately update to the latest version of the Itech Movie Portal Script where this vulnerability has been patched. Additional protective measures include implementing web application firewalls, restricting database user privileges, and conducting regular security assessments. Network segmentation and monitoring for unusual database access patterns can help detect exploitation attempts. The vulnerability underscores the importance of keeping web applications updated and following secure coding practices that prevent sql injection through proper input handling and query construction methods.