CVE-2009-4724 in PPScript
Summary
by MITRE
SQL injection vulnerability in shop.htm in PaymentProcessorScript.net PPScript allows remote attackers to execute arbitrary SQL commands via the cid parameter.
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Analysis
by VulDB Data Team • 05/02/2026
The vulnerability identified as CVE-2009-4724 represents a critical SQL injection flaw within the PaymentProcessorScript.net PPScript application, specifically affecting the shop.htm component. This vulnerability resides in the handling of the cid parameter, which is processed without adequate input validation or sanitization measures. The flaw allows remote attackers to inject malicious SQL commands directly into the application's database layer through crafted input values, potentially compromising the entire backend database infrastructure.
This vulnerability falls under the Common Weakness Enumeration category CWE-89, which specifically addresses SQL injection weaknesses in software applications. The technical implementation flaw occurs when user-supplied data from the cid parameter is directly concatenated into SQL query strings without proper parameterization or escaping mechanisms. The PaymentProcessorScript.net PPScript application fails to implement secure coding practices that would prevent malicious SQL payloads from being executed within the database context. Attackers can exploit this vulnerability by crafting malicious input that alters the intended SQL query execution flow, potentially gaining unauthorized access to sensitive data, modifying database records, or even executing administrative commands on the underlying database system.
The operational impact of this vulnerability extends beyond simple data theft, as it provides attackers with potential persistence mechanisms and privilege escalation capabilities within the affected system. Remote attackers can leverage this vulnerability to extract confidential information including customer payment details, personal identification data, and business-critical financial records stored within the database. The vulnerability's remote exploitability means that attackers do not require physical access to the system or network, making it particularly dangerous for online payment processing applications that handle sensitive financial transactions. According to the MITRE ATT&CK framework, this vulnerability maps to the T1190 technique for exploitation of remote services and T1071.004 for application layer protocol usage, as it exploits a web application vulnerability to gain unauthorized database access.
Organizations utilizing PaymentProcessorScript.net PPScript should implement immediate mitigations including input validation and parameterized query implementation to prevent further exploitation. The recommended approach involves implementing proper input sanitization techniques that filter or escape special characters in the cid parameter before database processing. Additionally, application developers should adopt prepared statements or parameterized queries to ensure that user input cannot alter the intended structure of SQL commands. Network-level protections such as web application firewalls and intrusion detection systems can provide additional defense-in-depth measures, though these should not replace proper code-level fixes. The vulnerability also underscores the importance of regular security assessments and code reviews to identify similar injection flaws across the entire application stack, particularly in legacy payment processing systems that may not have been designed with modern security practices in mind.