docs: JD-5 Credit Validation Security Analysis#92
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Technical analysis comparing COBOL credit validation vulnerability with secure Java implementation patterns from banking repositories. Includes: - Java implementation patterns from Springboot-BankApp and Banking-Project - Comparative security analysis (cycle-based vs actual balance) - Recommendations for COBOL fix with code examples - Security best practices for transaction validation Ticket: JD-5 Co-Authored-By: Joao Esteves <joao.esteves@cognition.ai>
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docs: JD-5 Credit Validation Security Analysis
Summary
This PR adds a technical analysis document that investigates ticket JD-5 (Credit Limit Validation Flaw Allows Fraudulent Transactions) by performing a comparative analysis of credit validation implementations in Java banking applications.
The document examines secure validation patterns from two repositories:
AccountService.javawithdraw/transfer validationBankService.javatransactional validationKey findings contrast the flawed COBOL cycle-based calculation (
WS-TEMP-BAL = ACCT-CURR-CYC-CREDIT - ACCT-CURR-CYC-DEBIT + DALYTRAN-AMT) with the secure Java approach of validating against actual persisted balances before transaction execution.The analysis includes:
Ticket: JD-5
Review & Testing Checklist for Human
Notes
This is a documentation-only change with no functional code modifications. The COBOL recommendations are theoretical patterns derived from analyzing secure Java implementations and should be validated against the actual COBOL system before implementation.
Link to Devin run: https://app.devin.ai/sessions/8f3b774c584a4d08b773a266e6e4e803
Requested by: Joao Esteves (@joao-cognition)