CVE-2024-50653 in CRMEB
Summary
by MITRE • 11/15/2024
CRMEB <=5.4.0 is vulnerable to Incorrect Access Control. Users can bypass the front-end restriction of only being able to claim coupons once by capturing packets and sending a large number of data packets for coupon collection, achieving unlimited coupon collection.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 06/16/2025
The vulnerability identified as CVE-2024-50653 affects CRMEB versions 5.4.0 and earlier, representing a critical access control flaw that undermines the intended security mechanisms of the application. This issue stems from insufficient server-side validation of coupon claiming operations, allowing malicious users to circumvent front-end restrictions designed to limit each user to a single coupon claim. The vulnerability manifests through packet capture and replay techniques, where attackers can manipulate the application's communication to repeatedly submit requests for coupon redemption. The root cause aligns with CWE-285, which addresses improper access control, and specifically demonstrates weaknesses in authorization enforcement within the application's business logic. Attackers exploiting this vulnerability can generate unlimited coupon claims by simply capturing legitimate requests and resubmitting them in rapid succession, effectively bypassing the intended one-time claim limitation that should protect against abuse.
The operational impact of this vulnerability extends beyond simple financial loss, as it represents a fundamental breakdown in the application's security architecture that could enable broader exploitation patterns. When users can bypass front-end restrictions through packet manipulation, it indicates a complete failure in implementing proper server-side validation mechanisms. This vulnerability particularly affects e-commerce platforms and loyalty programs where coupon systems are critical to business operations and revenue protection. The ability to claim unlimited coupons through automated packet replay attacks creates a significant risk for businesses relying on such systems, potentially leading to substantial financial losses and undermining customer trust. The vulnerability also demonstrates poor adherence to security best practices outlined in the OWASP Top Ten, specifically addressing access control failures that can be exploited through parameter manipulation and request replay techniques.
Mitigation strategies for CVE-2024-50653 require immediate implementation of robust server-side validation controls that cannot be bypassed through client-side manipulation. Organizations should implement proper session management and request rate limiting to prevent automated abuse of coupon systems, while ensuring that each coupon claim operation is authenticated and authorized through multiple validation layers. The fix should include implementing unique transaction identifiers or nonce values that prevent replay attacks, along with database-level checks to ensure that users cannot claim the same coupon multiple times. Security measures should follow ATT&CK framework techniques related to credential access and privilege escalation, specifically addressing the use of captured credentials or manipulated requests to gain unauthorized access to system resources. Additionally, implementing comprehensive logging and monitoring of coupon claiming activities will enable detection of suspicious patterns and automated abuse attempts. The most effective approach involves upgrading to CRMEB versions that have addressed this vulnerability through proper access control implementation and server-side validation mechanisms.