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Hey everyone,
I've attached a patch to handle a nil interface when running modules with
Exploit::Capture.
Unlike Exploit::Lorcon, this module doesn't require an interface name to be
given since it can get it from pcap. However, it was using the possibly nil
interface in the ifconfig call. In an auxiliary module I'm messing with, I
would get this unless I specified an interface in the script or through the
options:
[-] Auxiliary failed: can't convert nil into String
So I moved the ifconfig to after the pcap lookupdev call and it uses that
instead.
Thanks,
Kris Katterjohn
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Index: lib/msf/core/exploit/capture.rb
===================================================================
--- lib/msf/core/exploit/capture.rb (revision 5711)
+++ lib/msf/core/exploit/capture.rb (working copy)
@@ -70,15 +70,15 @@
raise RuntimeError, "Pcaprub not available"
end
- # XXX: Force the interface to be up
- system("ifconfig", datastore['INTERFACE'], "up")
-
# Capture device
dev = datastore['INTERFACE'] || ::Pcap.lookupdev
len = (datastore['SNAPLEN'] || 65535).to_i
tim = (datastore['TIMEOUT'] || 0).to_i
fil = datastore['FILTER']
+ # XXX: Force the interface to be up
+ system("ifconfig", dev, "up")
+
self.capture = ::Pcap.open_live(dev, len, true, tim)
if (not self.capture)
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