Access Control Flaw in OpenStack Nova Affects Live Migration
CVE-2020-17376

8.3HIGH

Key Information:

Vendor

Openstack
Status
Nova
Vendor
CVE Published:
26 August 2020

What is CVE-2020-17376?

A vulnerability in the Guest.migrate function within OpenStack Nova allows users to potentially access devices on the destination host that are shared with the source host. This occurs after performing a soft reboot of an instance that has undergone live migration, enabling unauthorized access to block devices that may point to different Cinder volumes. Deployments that permit host-based connections, such as root and ephemeral devices, are particularly affected, necessitating prompt attention to ensure proper security measures.

References

https://launchpad.net/bugs/1890501
x_refsource_MISC
https://security.openstack.org/ossa/OSSA-2020-006.html
x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2020/08/25/4
x_refsource_MISC

CVSS V3.1

Score:
8.3
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.