Low severity · published Aug 3, 2022
CVE-2022-37394
An issue was discovered in OpenStack Nova before 23.2.2, 24.x before 24.1.2, and 25.x before 25.0.2
3.3
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NO
Nova · Openstack
before 23.2.2; 24.0.0 before 24.1.2; 25.0.0 before 25.0.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-37394
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-37394
Exploit
https://bugs.launchpad.net/ossa/+bug/1981813
Patch
https://review.opendev.org/c/openstack/nova/+/849985
Third Party Advisory
https://review.opendev.org/c/openstack/nova/+/850003
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