[Bug 1813007] Re: Unable to install new flows on compute nodes when having broken security group rules

[Gage Hugo]

Since this was public for about a month prior to making private, it
doesn't seem worth keeping under embargo here. Getting this fixed
quickly is preferable and opening it up publicly would allow more eyes
on it and easier communication to help fix this.

** Description changed:

- This issue is being treated as a potential security risk under embargo.
- Please do not make any public mention of embargoed (private) security
- vulnerabilities before their coordinated publication by the OpenStack
- Vulnerability Management Team in the form of an official OpenStack
- Security Advisory. This includes discussion of the bug or associated
- fixes in public forums such as mailing lists, code review systems and
- bug trackers. Please also avoid private disclosure to other individuals
- not already approved for access to this information, and provide this
- same reminder to those who are made aware of the issue prior to
- publication. All discussion should remain confined to this private bug
- report, and any proposed fixes should be added to the bug as
- attachments.
- 
  It appears that we have found that neutron-openvswitch-agent appears to have a bug where two security group rules that have two different port ranges that overlap tied to the same parent security group will cause neutron to not be able to configure networks on the compute nodes where those security groups are present.
  Those are the broken security rules: https://pastebin.canonical.com/p/wSy8RSXt85/
  Here is the log when we discovered the issue: https://pastebin.canonical.com/p/wvFKjNWydr/

** Information type changed from Private Security to Public Security

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https://bugs.launchpad.net/bugs/1813007

Title:
  Unable to install new flows on compute nodes when having broken
  security group rules

Status in Ubuntu Cloud Archive:
  Triaged
Status in Ubuntu Cloud Archive pike series:
  Triaged
Status in Ubuntu Cloud Archive queens series:
  Triaged
Status in Ubuntu Cloud Archive rocky series:
  Triaged
Status in Ubuntu Cloud Archive stein series:
  Triaged
Status in neutron:
  New
Status in OpenStack Security Advisory:
  Incomplete
Status in neutron package in Ubuntu:
  Triaged
Status in neutron source package in Xenial:
  Triaged
Status in neutron source package in Bionic:
  Triaged
Status in neutron source package in Cosmic:
  Triaged
Status in neutron source package in Disco:
  Triaged

Bug description:
  It appears that we have found that neutron-openvswitch-agent appears to have a bug where two security group rules that have two different port ranges that overlap tied to the same parent security group will cause neutron to not be able to configure networks on the compute nodes where those security groups are present.
  Those are the broken security rules: https://pastebin.canonical.com/p/wSy8RSXt85/
  Here is the log when we discovered the issue: https://pastebin.canonical.com/p/wvFKjNWydr/

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