CVE-2006-3092 in PhpMyFactures
Summary
by MITRE
PhpMyFactures 1.2 and earlier allows remote attackers to bypass authentication and modify data via direct requests with modified parameters to (1) /tva/ajouter_tva.php, (2) /remises/ajouter_remise.php, (3) /pays/ajouter_pays.php, (4) /pays/modifier_pays.php, (5) /produits/ajouter_cat.php, (6) /produits/ajouter_produit.php, (7) /clients/ajouter_client.php, (8) /clients/modifier_client.php. NOTE: the provenance of this information is unknown; portions of the details are obtained from third party information.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 07/29/2018
This vulnerability affects PhpMyFactures version 1.2 and earlier, representing a critical authentication bypass flaw that enables remote attackers to manipulate sensitive data through direct parameter manipulation. The vulnerability specifically targets multiple administrative endpoints within the application's file structure, including tax rate management, discount handling, country configuration, product categories, and client management modules. These endpoints lack proper access controls and input validation mechanisms, allowing unauthorized users to bypass the authentication system entirely and perform unauthorized modifications to the underlying database.
The technical flaw stems from insufficient input validation and authentication checks within the application's web interface. Attackers can exploit this weakness by directly accessing the identified php files and modifying request parameters to gain administrative privileges without proper authentication. This type of vulnerability aligns with CWE-285, which addresses improper authorization issues in software applications, and represents a classic example of insecure direct object reference vulnerabilities. The attack vector operates through HTTP requests that directly target the vulnerable endpoints, making it particularly dangerous as it requires no complex exploitation techniques beyond basic web request manipulation.
The operational impact of this vulnerability is severe and multifaceted, as it allows attackers to perform arbitrary modifications to critical business data including tax rates, discounts, country configurations, product categories, and customer information. This compromises data integrity and can lead to financial losses through incorrect pricing calculations, unauthorized access to customer data, and potential system compromise. The vulnerability enables attackers to escalate privileges and perform actions such as adding new tax rates, modifying existing discount structures, changing country information, creating or altering product categories, and manipulating client records. This represents a significant risk to business operations and customer data protection, particularly in environments where financial and customer information is processed through the vulnerable application.
The attack surface for this vulnerability encompasses all users who can access the affected php endpoints, making it particularly dangerous in environments where the application is publicly accessible. The lack of proper input validation means that attackers can manipulate parameters to gain unauthorized access to administrative functions, while the absence of proper session management and authentication checks removes any barriers to data modification. Security practitioners should consider this vulnerability in relation to ATT&CK technique T1078 which covers valid accounts and T1566 which covers credential harvesting, as the bypass allows for unauthorized access without proper authentication. Organizations should implement immediate mitigations including access control restrictions, input validation, and proper authentication checks at all endpoints, while also considering the implementation of web application firewalls to monitor and block suspicious parameter modifications. Regular security audits and penetration testing should be conducted to identify similar vulnerabilities in other components of the application stack.