CVE-2020-17376

Public Exploit

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.

Category

8.3
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.18%
Vendor Advisory openstack.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://launchpad.net/bugs/1890501 third party advisory exploit
https://security.openstack.org/ossa/OSSA-2020-006.html patch vendor advisory
http://www.openwall.com/lists/oss-security/2020/08/25/4 patch mailing list third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-17376?
CVE-2020-17376 has been scored as a high severity vulnerability.
How to fix CVE-2020-17376?
To fix CVE-2020-17376, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-17376 being actively exploited in the wild?
It is possible that CVE-2020-17376 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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