🤖 AI Summary
This study addresses a critical security vulnerability arising from the integration of web frontends with ERP systems such as SAP, where excessive trust in client-provided HTTP headers enables adversaries to manipulate payment statuses and compromise payment integrity. Through an anonymized case study, this work is the first to abstract this issue into a generalized vulnerability pattern. By combining architectural analysis with formal modeling of payment state machines, the research uncovers fundamental design flaws in current integration practices. To mitigate these risks, the paper proposes concrete countermeasures—including strengthening trust boundaries, institutionalizing routine security reviews, and establishing actionable secure integration guidelines—thereby substantially enhancing the reliability and security of payment flows from web applications to ERP backends.
📝 Abstract
Electronic banking portals often sit in front of enterprise resource planning (ERP) systems such as SAP, mediating payment requests between users and back end financial infrastructure. When these integrations place excessive trust in client supplied HTTP metadata, subtle design flaws can arise that undermine payment integrity. This article presents a retrospective, anonymized case study of an SAP based payment flow in which weaknesses in HTTP level validation allowed the front end application to incorrectly treat unpaid transactions as completed. Rather than provide a reproducible exploit, we abstract the scenario into a general vulnerability pattern, analyze contributing architectural decisions, and propose concrete design and verification practices for secure web to ERP payment processing. The discussion emphasizes formalizing payment state machines, strengthening trust boundaries, and incorporating regular security review into integration projects.