osdir.com


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Openstack-security] [Bug 1837339] Re: CIDR's of the form 12.34.56.78/0 should be an error


Per Tristan's suggestion, the VMT will treat this as a security
hardening opportunity, no advisory needed.

** Changed in: ossa
       Status: Incomplete => Won't Fix

** Information type changed from Public Security to Public

** Tags added: security

-- 
You received this bug notification because you are a member of OpenStack
Security SIG, which is subscribed to OpenStack.
https://bugs.launchpad.net/bugs/1837339

Title:
  CIDR's of the form 12.34.56.78/0 should be an error

Status in OpenStack Dashboard (Horizon):
  Confirmed
Status in neutron:
  New
Status in OpenStack Security Advisory:
  Won't Fix
Status in OpenStack Security Notes:
  New

Bug description:
  The problem is that some users do not understand how CIDRs work, and
  incorrectly use /0 when they are trying to specify a single IP or a
  subnet in an Access Rule.  Unfortunately 12.34.56.78/0 means the same
  thing as 0.0.0.0/0.

  The proposed fix is to insist that /0 only be used with 0.0.0.0/0 and
  the IPv6 equivalent ::/0 when entering or updating Access Rule CIDRs
  in via the dashboard.

  I am labeling this as a security vulnerability since it leads to naive
  users creating instances with ports open to the world when they didn't
  intend to do that.

To manage notifications about this bug go to:
https://bugs.launchpad.net/horizon/+bug/1837339/+subscriptions