Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openstack | Nova | < 19.3.1 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2020/08/25/4Mailing ListPatchThird Party Advisory
- https://launchpad.net/bugs/1890501ExploitThird Party Advisory
- https://security.openstack.org/ossa/OSSA-2020-006.htmlPatchVendor Advisory
- http://www.openwall.com/lists/oss-security/2020/08/25/4Mailing ListPatchThird Party Advisory
- https://launchpad.net/bugs/1890501ExploitThird Party Advisory
- https://security.openstack.org/ossa/OSSA-2020-006.htmlPatchVendor Advisory
FAQ
What is CVE-2020-17376?
CVE-2020-17376 is a vulnerability with a CVSS score of 8.3 (HIGH). 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 underg...
How severe is CVE-2020-17376?
CVE-2020-17376 has been rated HIGH with a CVSS base score of 8.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-17376?
Check the references section above for vendor advisories and patch information. Affected products include: Openstack Nova.