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* Added validation to main block inputs `start_ip` and `end_ip`. * Bounded scan range to 256 IPs to prevent resource exhaustion / DoS. * Generated IP ranges robustly using the `ipaddress` module to prevent malformed strings. Co-authored-by: ManupaKDU <95234271+ManupaKDU@users.noreply.github.com>
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🚨 Severity: MEDIUM
💡 Vulnerability: The main script explicitly hardcoded the network boundaries to be scanned (
192.168.43.1and192.168.43.254), but manually calculated the range using basic string splits (rsplit). If these parameters were parameterized by user input without validation in the future, it would have led to Denial of Service via massive ThreadPool resource exhaustion, memory crashes, and invalid IP generations.🎯 Impact: Potential thread exhaustion and memory overflow via unrestrained concurrent pings if large/invalid inputs are supplied.
🔧 Fix: Added defensive validation to parse both IPs securely using the
ipaddressmodule. Checked thatstart_obj <= end_obj, enforced a maximum hard limit of256IPs per execution run, and updated the iterator to generate properly validated IPv4 objects rather than unverified strings.✅ Verification: Verified by executing
python3 testping1.pysuccessfully and running the test suite viapython3 -m unittest test_testping1.pyto ensure backwards compatibility.PR created automatically by Jules for task 10610977065217296730 started by @ManupaKDU