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Privilege Escalation Affecting nova package, versions [,19.3.1) [20.0.0, 20.4.0) [21.0.0, 21.1.0)

0.0
high

Snyk CVSS

    Attack Complexity High
    Privileges Required High
    Scope Changed
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.17% (54th percentile)
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NVD
8.3 high
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Red Hat
8.3 high

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  • Snyk ID SNYK-PYTHON-NOVA-1577283
  • published 27 Aug 2020
  • disclosed 27 Aug 2020
  • credit Unknown
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Introduced: 27 Aug 2020

CVE-2020-17376 Open this link in a new tab
CWE-264 Open this link in a new tab

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.