[Veronica] Scheduled Sequence Processed

[minhyuk]

Vulnerability Report

Summary

This issue highlights several vulnerabilities identified in the replay_packet/replay_l2cap_packet.c file. These vulnerabilities could lead to potential security risks and need immediate attention.

Identified Vulnerabilities

1. No Input Validation: The Bluetooth address (BT_ADDR) passed via argv[1] is not validated, which can lead to unexpected behavior or security vulnerabilities.
2. Potential Buffer Overflow: The replay_buggy_packet variable is used directly in the send function without checking if its length matches the expected SIZE, posing a risk of buffer overflow.
3. Lack of Error Handling for send: Although there is a check for send failure, the code does not handle the case where send returns 0 bytes, leading to incomplete data transmission.
4. System Call Errors: Errors from system calls like socket, bind, and connect are printed, but there is no cleanup of resources before the program exits, leading to potential resource leaks.
5. Hardcoded Packet Data: The replay_buggy_packet contains hardcoded data which may be sensitive or harmful, and should not be hardcoded.

Recommendations for Fixes

• Implement comprehensive input validation for the Bluetooth address.
• Ensure the length of replay_buggy_packet is checked against the expected SIZE before calling send.
• Add proper handling for the case where send returns 0 bytes.
• Ensure all resources are properly cleaned up before exiting in case of errors in system calls.
• Avoid hardcoding sensitive or harmful data within the code.

Addressing these vulnerabilities will improve the security and robustness of the code.