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.

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2023:1948 advisory.

    OpenStack Compute (codename Nova) is open source software designed     to provision and manage large networks of virtual machines,creating a     redundant and scalable cloud computing platform. It gives you the software,     control panels, and APIs required to orchestrate a cloud, including running     instances, managing networks, and controlling access through users and     projects.OpenStack Compute strives to be both hardware and hypervisor     agnostic, currently supporting a variety of standard hardware     configurations and seven major hypervisors.

    Security Fix(es):

    * Compute service fails to restart if the vnic_type of a bound port changed     from direct to macvtap (CVE-2022-37394)

    For more details about the security issue(s), including the impact, a CVSS     score, acknowledgments, and other related information, refer to the CVE     page listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5866-1 advisory.

    It was discovered that Nova did not properly manage data logged into the log file. An attacker with read     access to the service's logs could exploit this issue and may obtain sensitive information. This issue     only affected Ubuntu 16.04 ESM and Ubuntu 18.04 LTS. (CVE-2015-9543)

    It was discovered that Nova did not properly handle attaching and reattaching the encrypted volume. An     attacker could possibly use this issue to perform a denial of service attack. This issue only affected     Ubuntu 16.04 ESM. (CVE-2017-18191)

    It was discovered that Nova did not properly handle the updation of domain XML after live migration. An     attacker could possibly use this issue to corrupt the volume or perform a denial of service attack. This     issue only affected Ubuntu 18.04 LTS. (CVE-2020-17376)

    It was discovered that Nova was not properly validating the URL passed to noVNC. An attacker could     possibly use this issue by providing malicious URL to the noVNC proxy to redirect to any desired URL. This     issue only affected Ubuntu 16.04 ESM and Ubuntu 18.04 LTS. (CVE-2021-3654)

    It was discovered that Nova did not properly handle changes in the neutron port of vnic_type type. An     authenticated user could possibly use this issue to perform a denial of service attack. This issue only     affected Ubuntu 20.04 LTS. (CVE-2022-37394)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
194240	RHEL 8 : Red Hat OpenStack Platform 16.2 (openstack-nova) (RHSA-2023:1948)	Nessus	Red Hat Local Security Checks	low
171386	Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS : Nova vulnerabilities (USN-5866-1)	Nessus	Ubuntu Local Security Checks	high

Detections

Analytics

CVE-2022-37394

low

Tenable Plugins

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high