CVE-2022-37394
Last modified
CVE-2022-37394 is a low-severity vulnerability rated 3.3/10 on the CVSS scale. An issue was discovered in OpenStack Nova before 23.2.2, 24.x before 24.1.2, and 25.x before 25.0.2. By creating a neutron port with the direct vnic_type, creating an instance bound to that port, and then changing the vnic_type of the bound port to macvtap, an authenticated user may cause the compute service to fail to restart, resulting in a possible denial of service. EPSS estimates a 0.29% chance of exploitation in the next 30 days.
Description
An issue was discovered in OpenStack Nova before 23.2.2, 24.x before 24.1.2, and 25.x before 25.0.2. By creating a neutron port with the direct vnic_type, creating an instance bound to that port, and then changing the vnic_type of the bound port to macvtap, an authenticated user may cause the compute service to fail to restart, resulting in a possible denial of service. Only Nova deployments configured with SR-IOV are affected.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Openstack | Nova | < 23.2.2 |
| Openstack | Nova | >= 24.0.0, < 24.1.2 |
| Openstack | Nova | >= 25.0.0, < 25.0.2 |
References
- https://bugs.launchpad.net/ossa/+bug/1981813Exploit, Issue Tracking, Third Party Advisory
- https://review.opendev.org/c/openstack/nova/+/849985Patch, Third Party Advisory
- https://review.opendev.org/c/openstack/nova/+/850003Third Party Advisory
- https://bugs.launchpad.net/ossa/+bug/1981813Exploit, Issue Tracking, Third Party Advisory
- https://review.opendev.org/c/openstack/nova/+/849985Patch, Third Party Advisory
- https://review.opendev.org/c/openstack/nova/+/850003Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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