UBUNTU-CVE-2020-17376

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    UBUNTU-CVE-2020-17376

    Published: 26 Aug 2020Last Modified: 4 Feb 2026
    Upstream:
    CVE-2020-17376
    Aliases:
    USN-5866-1

    Summary:

    Details: 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.

    References: https://ubuntu.com/security/CVE-2020-17376, https://www.openwall.com/lists/oss-security/2020/08/25/4, https://ubuntu.com/security/notices/USN-5866-1, https://www.cve.org/CVERecord?id=CVE-2020-17376

    Affected packages

    Package

    Name: nova

    Purl: pkg:deb/ubuntu/nova@2:17.0.13-0ubuntu5.3?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2:17.0.13-0ubuntu5.3

    Affected versions

    2:16.0.1-0ubuntu1
    2:16.0.1-0ubuntu2

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2020-17376 | CVE-DB