CVE-2018-8906 in dsmall
Summary
by MITRE
dsmall v20180320 has XSS via a crafted street address to public/index.php/home/memberaddress/index.html, which is mishandled at public/index.php/home/memberaddress/edit/address_id/2.html.
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Analysis
by VulDB Data Team • 01/15/2020
The vulnerability identified as CVE-2018-8906 represents a cross-site scripting flaw within the dsmall e-commerce platform version 20180320. This security weakness manifests when users input maliciously crafted street addresses through the public/index.php/home/memberaddress/index.html endpoint, which then gets improperly processed and handled at the public/index.php/home/memberaddress/edit/address_id/2.html route. The vulnerability stems from inadequate input validation and sanitization mechanisms that fail to properly escape or filter user-supplied data before it is rendered back to other users within the application's web interface.
The technical exploitation of this vulnerability occurs through the manipulation of address fields in the member address management system, where malicious scripts can be injected into the street address input field. When the application processes this data and displays it in the edit interface, the embedded malicious code executes within the context of other users' browsers, potentially allowing attackers to steal session cookies, perform unauthorized actions, or redirect users to malicious websites. This type of vulnerability falls under the CWE-79 category of Cross-Site Scripting, specifically representing a stored XSS variant since the malicious payload is persisted in the application's database and executed against multiple users.
The operational impact of this vulnerability extends beyond simple data theft, as it can enable attackers to compromise user accounts and manipulate the application's functionality. An attacker could craft payloads that steal authentication tokens, modify user permissions, or even execute arbitrary commands within the application's context. The vulnerability affects the core user management functionality of the platform, potentially allowing unauthorized access to personal information and financial data stored in user profiles. According to ATT&CK framework, this vulnerability maps to T1059.008 for Scripting and T1531 for Account Access Through Persistence, as it enables persistent access through session hijacking and account compromise.
Mitigation strategies for this vulnerability require immediate implementation of robust input validation and output encoding mechanisms throughout the application's address handling components. The system should implement proper HTML entity encoding for all user-supplied data before rendering it in web pages, utilize Content Security Policy headers to limit script execution, and implement strict input validation that rejects or sanitizes potentially malicious characters. Additionally, the application should employ parameterized queries and input sanitization libraries to prevent injection attacks, while also implementing proper access controls and audit logging to detect unauthorized modifications. Security patches should be applied immediately to update the dsmall platform to versions that address this specific XSS vulnerability, and regular security testing including automated scanning and manual penetration testing should be conducted to identify similar weaknesses in other application components.