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cobbr / Covenant

Covenant is a collaborative .NET C2 framework for red teamers.
https://cobbr.io/Covenant.html
GNU General Public License v3.0
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[Bug] Dev branch - Covenant doesn't start if the listener interface is no longer available #348

Open seckek opened 2 years ago

seckek commented 2 years ago

Feature Request or Bug Bug

Describe the feature request or bug If a listener is configured for an interface that no longer exists (eg. tun0) Covenant is unable to start.

To Reproduce Steps to reproduce the behavior:

  1. Create a listener in covenant
  2. Disable the interface the listener was using (eg. by using "ifconfig eth0 down")
  3. Restart covenant
  4. Observe the "Cannot assign requested address" error.

Expected behavior Covenant should start without the affected listener.

Screenshots Setting up the listener:

Cov1

Removing the interface and restarting Covenant:

Cov2
xiaoheiccc commented 2 years ago

BindAddress should be 0.0.0.0

seckek commented 2 years ago

Wouldn't 0.0.0.0 listen on all interfaces which is different to using only one interface? I don't think that the intention is for users to always use 0.0.0.0, otherwise why have the option to change the BindAddress