CVE-2017-20137 in B2B Script
Summary
by MITRE • 07/16/2022
A vulnerability was found in Itech B2B Script 4.28. It has been rated as critical. This issue affects some unknown processing of the file /catcompany.php. The manipulation of the argument token with the input 704667c6a1e7ce56d3d6fa748ab6d9af3fd7' AND 6539=6539 AND 'Fakj'='Fakj leads to sql injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
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Analysis
by VulDB Data Team • 11/11/2022
The vulnerability identified as CVE-2017-20137 represents a critical sql injection flaw within the Itech B2B Script version 4.28, specifically impacting the /catcompany.php file processing functionality. This vulnerability stems from inadequate input validation and sanitization mechanisms that fail to properly handle user-supplied data, creating an exploitable condition where malicious sql payloads can be injected directly into the application's database queries. The attack vector is remotely accessible, meaning threat actors can exploit this weakness without requiring physical access to the target system, making it particularly dangerous for web applications that are publicly exposed.
The technical exploitation of this vulnerability occurs through the manipulation of the token argument parameter, where the malicious input 704667c6a1e7ce56d3d6fa748ab6d9af3fd7' AND 6539=6539 AND 'Fakj'='Fakj demonstrates a classic sql injection technique. This payload leverages the logical evaluation of the condition 6539=6539 which always returns true, allowing the attacker to bypass authentication mechanisms or manipulate database queries. The vulnerability aligns with CWE-89 which categorizes sql injection as a fundamental weakness in application security where untrusted data is directly incorporated into sql commands without proper sanitization or parameterization.
The operational impact of this vulnerability extends beyond simple data theft, as successful exploitation could enable attackers to perform unauthorized database operations including data extraction, modification, or deletion. The remote exploitability means that attackers can target the application from anywhere on the internet, potentially compromising sensitive business data such as customer information, vendor details, and financial records that are typically stored within b2b platforms. This vulnerability represents a significant risk to businesses relying on the Itech B2B Script for their commercial operations, as it could lead to complete system compromise and data breaches.
Security mitigations for this vulnerability should include immediate implementation of proper input validation and parameterized queries to prevent sql injection attacks. The application should employ prepared statements or stored procedures to ensure that user input is properly escaped and treated as data rather than executable code. Additionally, input sanitization measures should be implemented to filter out or escape potentially dangerous characters and sql keywords. Organizations should also consider implementing web application firewalls and regular security assessments to detect and prevent similar vulnerabilities. The ATT&CK framework categorizes this type of vulnerability under T1190 - Proxy Process, as attackers may leverage sql injection to establish persistent access and move laterally within compromised networks, making early remediation crucial for overall security posture.