Comment 8 for bug 1300785

Revision history for this message
Tristan Cacqueray (tristan-cacqueray) wrote : Re: neutron allows security group rules with invalid cidrs, resulting in broken iptables rules (breaking iptables-restore)

@Christoph Yes, here it is.

I have a question, is the iptables-restore issue will also prevent former rules from being re-applied or will it break at the
 time the invalid rule is actually being applied ?
In such a case, the impact desc would need a note about that in case of a host reboot.

Impact description draft #1:

Title: Neutron security group DoS through invalid CIDR
Reporter: Stephen Ma (HP)
Products: Neutron
Versions: 2013.1 to 2013.2.3, and 2014.1 versions

Description:
Stephen Ma from Hewlett Packard reported a vulnerability in Neutron security group. By creating a security group rule with an invalid CIDR, an authenticated user may break openvswitch-agent process, preventing further rules from being applied on the host. Note: removal of the faulty rule is not enough, the openvswitch-agent must be restarted.
All Neutron setups are affected.