🛡️ Sentinel: [CRITICAL] Fix hardcoded password in jungo-image script

[ManupaKDU]

🚨 Severity: CRITICAL

💡 Vulnerability:
The scripts/flashing/jungo-image.py script contained a hardcoded plaintext password (password = "password1") that was used as a fallback if no password argument was provided via the -p / --pass flag.

🎯 Impact:
Any automation or user invoking the script without explicitly providing a password would inadvertently attempt authentication using the hardcoded secret. Hardcoding secrets in source code violates fundamental security practices and risks unauthorized access or unwanted exposure if the credentials happen to be valid in specific operational contexts.

🔧 Fix:

• Removed the hardcoded plaintext fallback (password1).
• Changed the initialization of the password variable to an empty string.
• Implemented a secure interactive prompt utilizing Python's built-in getpass.getpass() function. If the script is invoked without a password, it will securely prompt the user rather than failing or using a default.
• Updated the CLI help output to accurately describe the new behavior (prompts if not provided).

✅ Verification:

1. Ran cat scripts/flashing/jungo-image.py to ensure the plaintext password was removed and getpass is correctly invoked.
2. Verified the script's syntax via python3 -m py_compile scripts/flashing/jungo-image.py.
3. Executed the scripts/ test suite (python3 -m unittest discover -s scripts -p 'test_*.py') to verify no regressions were introduced.

Signed-off-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>

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PR created automatically by Jules for task 14832238944885401570 started by @manupawickramasinghe

[google-labs-jules]

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