CVE-2018-20848 in Peel SHOPPING
Summary
by MITRE
Advisto PEEL SHOPPING 9.0.0 has CSRF via en/achat/caddie_ajout.php and en/achat/caddie_affichage.php, as demonstrated by an XSS payload in the couleurId[0] parameter to the latter.
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Analysis
by VulDB Data Team • 10/09/2023
The vulnerability identified as CVE-2018-20848 affects Advisto PEEL SHOPPING version 9.0.0 and represents a critical cross-site request forgery vulnerability that can be exploited to execute malicious scripts within the context of authenticated users. This weakness exists in the web application's handling of user requests and demonstrates a fundamental flaw in the application's security mechanisms that could lead to significant compromise of user sessions and data integrity. The vulnerability specifically manifests in two endpoints: en/achat/caddie_ajout.php and en/achat/caddie_affichage.php, which are part of the shopping cart functionality of the e-commerce platform.
The technical flaw lies in the application's failure to implement proper anti-CSRF tokens or validation mechanisms when processing requests to these specific cart management endpoints. When an attacker crafts a malicious request containing an XSS payload within the couleurId[0] parameter of the caddie_affichage.php endpoint, the vulnerable application processes this input without sufficient validation or token verification. This allows an attacker to trick authenticated users into executing unintended actions, potentially leading to session hijacking, data manipulation, or unauthorized transactions. The vulnerability is particularly dangerous because it combines CSRF exploitation with XSS capabilities, amplifying the potential impact of the attack vector.
The operational impact of this vulnerability extends beyond simple data theft or manipulation, as it can enable attackers to gain persistent access to user accounts and compromise the entire shopping cart system. An attacker could exploit this vulnerability to add unauthorized products to user carts, modify existing cart contents, or redirect users to malicious websites. The combination of CSRF and XSS in a single vulnerability creates a particularly dangerous attack surface that could be leveraged for more sophisticated attacks including credential theft, session fixation, or even complete account takeover. The vulnerability affects all users who have authenticated sessions within the application, making it a significant concern for e-commerce platforms where user trust and transaction security are paramount.
Mitigation strategies for this vulnerability should focus on implementing robust anti-CSRF protection mechanisms throughout the application, particularly in the shopping cart functionality. Organizations should ensure that all state-changing requests include unique, unpredictable tokens that are validated server-side before processing. The implementation should follow established security standards and best practices, including the use of secure token generation algorithms and proper session management. Additionally, input validation and sanitization should be enhanced to prevent malicious payloads from being processed, particularly in parameters like couleurId that are susceptible to XSS attacks. Security measures should also include proper output encoding and Content Security Policy implementations to prevent execution of unauthorized scripts. The vulnerability highlights the importance of comprehensive security testing including both CSRF and XSS vulnerability assessments, as well as adherence to security frameworks such as those defined by the CWE (Common Weakness Enumeration) and ATT&CK (Attack Tree Analysis) methodologies to ensure proper defense-in-depth strategies are implemented. Regular security audits and penetration testing should be conducted to identify and remediate similar vulnerabilities across the entire application stack, particularly in web applications that handle sensitive user data and financial transactions.