Privilege Escalation Affecting nova Open this link in a new tab package, versions [,19.3.1) [20.0.0, 20.4.0) [21.0.0, 21.1.0)


0.0
high
  • Attack Complexity

    High

  • Privileges Required

    High

  • Scope

    Changed

  • Confidentiality

    High

  • Integrity

    High

  • Availability

    High

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  • snyk-id

    SNYK-PYTHON-NOVA-1577283

  • published

    27 Aug 2020

  • disclosed

    27 Aug 2020

  • credit

    Unknown

How to fix?

Upgrade nova to version 19.3.1, 20.4.0, 21.1.0 or higher.

Overview

nova is an OpenStack Nova provides a cloud computing fabric controller, supporting a wide variety of compute technologies, including: libvirt (KVM, Xen, LXC and more), Hyper-V, VMware, XenServer, OpenStack Ironic and PowerVM.

Affected versions of this package are vulnerable to Privilege Escalation. An issue was discovered in Guest.migrate in virt/libvirt/guest.py in OpenStack Nova. 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.