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[Bug 1410839] Re: Shell Command injection in ufw_backend.py

 

I was able to use "iface" to insert a shell command, too.

1.) save a profile wich uses some interface , for example "eth0" to your home directory.
2.) edit the file like this

iface = eth0;xterm;

3.) rename the profile to some other name than before
4.) import the new profile with Gufw from your home directory
5.) use the new profile
6.) xterm starts .... boom :-)

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https://bugs.launchpad.net/bugs/1410839

Title:
  Shell Command injection in ufw_backend.py

Status in Gufw:
  Fix Released
Status in gui-ufw package in Ubuntu:
  Confirmed

Bug description:
  Firewall Administrators can be tricked by someone to export a profile
  with Gufw to an special crafted file or path name wich contains shell
  code.

  reason is this line in ufw_backend.py :

  def export_profile(self, profile, file):
      commands.getstatusoutput('cp /etc/gufw/' + profile + '.profile ' + file + ' ; chmod 777 ' + file)

  The rename and delete funktions are also unsave if profile name
  contains shell code, like semicolons.

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References