An issue was discovered in Guest.migrate in virt/libvirt/guest.py in OpenStack Nova before 19.3.1, 20.x before 20.3.1, and 21.0.0. By performing a soft reboot of an instance that has previously undergone live migration, a user may gain access to destination host devices that share the same paths as host devices previously referenced by the virtual machine on the source host. This can include block devices that map to different Cinder volumes at the destination than at the source. Only deployments allowing host-based connections (for instance, root and ephemeral devices) are affected.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - An issue was discovered in Guest.migrate in virt/libvirt/guest.py in OpenStack Nova before 19.3.1, 20.x
    before 20.3.1, and 21.0.0. By performing a soft reboot of an instance that has previously undergone live
    migration, a user may gain access to destination host devices that share the same paths as host devices
    previously referenced by the virtual machine on the source host. This can include block devices that map
    to different Cinder volumes at the destination than at the source. Only deployments allowing host-based
    connections (for instance, root and ephemeral devices) are affected. (CVE-2020-17376)

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.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2020:3704 advisory.

    OpenStack Compute (nova) launches and schedules large networks of virtual     machines, creating a redundant and scalable cloud computing platform.
    Compute provides the software, control panels, and APIs required to     orchestrate a cloud, including running virtual machine instances and     controlling access through users and projects.

    Security Fix(es):

    * Soft reboot after live-migration reverts instance to original source     domain XML (CVE-2020-17376)

    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 Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2020:3702 advisory.

    OpenStack Compute (nova) launches and schedules large networks of virtual     machines, creating a redundant and scalable cloud computing platform.
    Compute provides the software, control panels, and APIs required to     orchestrate a cloud, including running virtual machine instances and     controlling access through users and projects.

    Security Fix(es):

    * Soft reboot after live-migration reverts instance to original source     domain XML (CVE-2020-17376)

    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 Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2020:3711 advisory.

    OpenStack Compute (nova) launches and schedules large networks of virtual     machines, creating a redundant and scalable cloud computing platform.
    Compute provides the software, control panels, and APIs required to     orchestrate a cloud, including running virtual machine instances and     controlling access through users and projects.

    Security Fix(es):

    * Soft reboot after live-migration reverts instance to original source     domain XML (CVE-2020-17376)

    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 Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2020:3708 advisory.

    OpenStack Compute (nova) launches and schedules large networks of virtual     machines, creating a redundant and scalable cloud computing platform.
    Compute provides the software, control panels, and APIs required to     orchestrate a cloud, including running virtual machine instances and     controlling access through users and projects.

    Security Fix(es):

    * Soft reboot after live-migration reverts instance to original source     domain XML (CVE-2020-17376)

    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 Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2020:3706 advisory.

    OpenStack Compute (nova) launches and schedules large networks of virtual     machines, creating a redundant and scalable cloud computing platform.
    Compute provides the software, control panels, and APIs required to     orchestrate a cloud, including running virtual machine instances and     controlling access through users and projects.

    Security Fix(es):

    * Soft reboot after live-migration reverts instance to original source     domain XML (CVE-2020-17376)

    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.

ID	Name	Product	Family	Severity
431903	SCA: security update for nova (GHSA-c7w7-9c85-4qxv)	Tenable Cloud Security	SCA Checks	high
431903	SCA: security update for nova (GHSA-c7w7-9c85-4qxv)	Tenable Self-Hosted Container Security	SCA Checks	high
171386	Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS : Nova vulnerabilities (USN-5866-1)	Nessus	Ubuntu Local Security Checks	high
140490	RHEL 8 : openstack-nova (RHSA-2020:3704)	Nessus	Red Hat Local Security Checks	high
140488	RHEL 8 : openstack-nova (RHSA-2020:3702)	Nessus	Red Hat Local Security Checks	high
140487	RHEL 7 : openstack-nova (RHSA-2020:3711)	Nessus	Red Hat Local Security Checks	high
140485	RHEL 7 : openstack-nova (RHSA-2020:3708)	Nessus	Red Hat Local Security Checks	high
140484	RHEL 8 : openstack-nova (RHSA-2020:3706)	Nessus	Red Hat Local Security Checks	high

Detections

Analytics

CVE-2020-17376

high

Tenable Plugins

high

high

high

high

high

high

high

high