An uncontrolled resource consumption flaw was found in openstack-neutron. This flaw allows a remote authenticated user to query a list of security groups for an invalid project. This issue creates resources that are unconstrained by the users quota. If a malicious user were to submit a significant number of requests, this could lead to a denial of service.
Weakness
The product does not properly control the allocation and maintenance of a limited resource.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Neutron | Openstack | * | 18.6.0 (excluding) |
| Neutron | Openstack | 19.0.0 (including) | 19.5.0 (excluding) |
| Openstack_platform | Redhat | 13.0 (including) | 13.0 (including) |
| Openstack_platform | Redhat | 16.1 (including) | 16.1 (including) |
| Openstack_platform | Redhat | 16.2 (including) | 16.2 (including) |
| Red Hat OpenStack Platform 16.1 | RedHat | openstack-neutron-1:15.2.1-1.20221005123225.40d217c.el8ost | * |
| Red Hat OpenStack Platform 16.2 | RedHat | openstack-neutron-1:15.3.5-2.20221005184727.c81fb5b.el8ost | * |
| Red Hat OpenStack Platform 17.0 | RedHat | openstack-neutron-1:18.4.1-0.20221128170741.5258354.el9ost | * |
| Neutron | Ubuntu | bionic | * |
| Neutron | Ubuntu | esm-infra/bionic | * |
| Neutron | Ubuntu | esm-infra/focal | * |
| Neutron | Ubuntu | focal | * |
| Neutron | Ubuntu | jammy | * |
| Neutron | Ubuntu | trusty | * |
| Neutron | Ubuntu | upstream | * |
| Neutron | Ubuntu | xenial | * |
Potential Mitigations
Mitigation of resource exhaustion attacks requires that the target system either:
The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.
The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/147.html
- https://cwe.mitre.org/data/definitions/227.html
- https://cwe.mitre.org/data/definitions/492.html