State Issues in Openstack Nova - CVE-2022-37394
Published: April 26, 2023
Vulnerability identifier: #VU75530
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-37394
CWE-ID: CWE-371
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to an error, related to port binding. 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.
Affected software
Openstack Nova
Red Hat OpenStack
openstack-nova (Red Hat package)
Red Hat OpenStack
openstack-nova (Red Hat package)
How to mitigate CVE-2022-37394
Install updates from vendor's website.
Openstack Nova - addressed in versions 23.2.2, 24.2.0, 25.1.0
openstack-nova (Red Hat package) - update to 20.6.2-2.20230308185148.fc01371.el8ost
openstack-nova (Red Hat package) - update to 20.6.2-2.20230308185148.fc01371.el8ost