[Openstack-security] [Bug 1081795] Re: oslo.rootwrap IpFilter fails to prevent ip netns exec

Thierry Carrez thierry.carrez+lp at gmail.com
Fri Apr 4 12:52:57 UTC 2014


** Changed in: oslo
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1081795

Title:
  oslo.rootwrap IpFilter fails to prevent ip netns exec

Status in Oslo - a Library of Common OpenStack Code:
  Fix Released

Bug description:
  This is an oslo.rootwrap bug.

  IpFilter is designed to allow any ip command, unless the second
  parameter is "netns" (in which case you only allow ip netns
  {list,add,delete}.

  The trick is it's trivial to work around this (just run 'ip -s netns
  exec').

  Once that's fixed, Nova should update from using a CommandFilter to
  using the IpFilter for calling 'ip'.

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