B104: hardcoded_bind_all_interfaces

B104: Test for binding to all interfaces

Binding to all network interfaces can potentially open up a service to traffic on unintended interfaces, that may not be properly documented or secured. This plugin test looks for a string pattern “0.0.0.0” that may indicate a hardcoded binding to all network interfaces.

Example:

>> Issue: Possible binding to all interfaces.
   Severity: Medium   Confidence: Medium
   Location: ./examples/binding.py:4
3   s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
4   s.bind(('0.0.0.0', 31137))
5   s.bind(('192.168.0.1', 8080))

See also

• __TODO__ : add best practice info on binding to all interfaces, and link here.

New in version 0.9.0.