fix: Address input validation vulnerabilities in OCPP message handling#441
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Security fixes for multiple input validation issues: - MOC-001: Fix OOB read in timestamp fractional second parsing (Time.cpp) - MOC-002: Add zero-length serial number check in certificate parsing (CertificateMbedTLS.cpp) - MOC-003: Add bounds validation in OCPP message parsing (Request.cpp, RequestQueue.cpp) - MOC-004: Fix NULL pointer dereference in TransactionEvent (TransactionEvent.cpp) - MOC-005: Fix typo causing NULL pointer (parenIdTag → parentIdTag) (MicroOcpp.cpp) - MOC-006: Validate FTP PASV response values are valid octets (FtpMbedTLS.cpp) - MOC-007: Add overflow-safe integer parsing for configuration (Configuration.cpp/.h, ChangeConfiguration.cpp, VariableService.cpp) These issues were identified during security review and could cause crashes or undefined behavior when processing malformed OCPP messages or server responses.
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Summary
This PR fixes multiple input validation vulnerabilities that could cause crashes or undefined behavior when processing malformed OCPP messages or server responses.
Vulnerabilities Fixed
High Severity
Request.cpp,RequestQueue.cppMedium Severity
Time.cpp)TransactionEvent.cpp)"parenIdTag"→"parentIdTag"(MicroOcpp.cpp)Low/Informational
FtpMbedTLS.cpp)Configuration.cpp,ChangeConfiguration.cpp,VariableService.cpp)CertificateMbedTLS.cpp)Testing
Breaking Changes
None - all fixes are backwards compatible
Vulnerabilities identified and remediation proposed by Nebari.ai — AI-native proactive security intelligence solution