CVE-2008-6535 in PayPal eStores
Summary
by MITRE
admin/settings.php in PayPal eStores allows remote attackers to bypass intended access restrictions and change the administrative password via a direct request with a modified NewAdmin parameter.
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Analysis
by VulDB Data Team • 11/15/2024
The vulnerability identified as CVE-2008-6535 resides within the administrative configuration file of PayPal eStores software, specifically in the admin/settings.php component. This flaw represents a critical access control vulnerability that undermines the security posture of e-commerce platforms relying on this software. The vulnerability stems from insufficient input validation and authorization checks within the administrative interface, creating a pathway for unauthorized users to escalate their privileges and gain administrative control over the system.
The technical exploitation of this vulnerability occurs through a simple yet effective method of manipulating HTTP requests. Attackers can directly access the admin/settings.php endpoint and modify the NewAdmin parameter to trigger administrative password changes without proper authentication or authorization. This type of vulnerability falls under the category of improper access control as defined by CWE-285, where the application fails to properly enforce authorization mechanisms for privileged operations. The flaw demonstrates a classic lack of input sanitization and validation that allows attackers to manipulate application state through direct parameter modification.
From an operational impact perspective, this vulnerability presents a severe risk to e-commerce businesses utilizing PayPal eStores. An attacker who successfully exploits this vulnerability can completely compromise the administrative interface, potentially leading to full system takeover, data exfiltration, and unauthorized modification of business-critical configurations. The vulnerability also enables attackers to establish persistent access through password changes, making detection and remediation more challenging. This type of attack aligns with ATT&CK technique T1078 which covers legitimate credentials use for persistence and privilege escalation.
The security implications extend beyond immediate administrative access as this vulnerability could serve as a stepping stone for more sophisticated attacks. Once an attacker gains administrative privileges, they can modify payment processing configurations, alter product listings, manipulate customer data, and potentially redirect transactions to malicious endpoints. The vulnerability also demonstrates poor security design principles where the application assumes that all requests are legitimate without proper verification of user authorization status. Organizations should consider implementing robust input validation mechanisms and proper session management to prevent such direct parameter manipulation attacks. The vulnerability highlights the importance of following secure coding practices and implementing defense-in-depth strategies that include proper access control checks at every administrative function. Mitigation strategies should include immediate patching of affected systems, implementation of web application firewalls, and regular security assessments to identify similar authorization flaws in other components of the application stack.