Vulnerability · Published Aug 26, 2020 · Assigned by mitre
CVE-2020-17376
High 8.3
In plain English
A high-severity security flaw in the nova package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 78% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | nova | 2:21.1.0-1 | DEBIAN-CVE-2020-17376 |
| Debian:13 | nova | 2:21.1.0-1 | DEBIAN-CVE-2020-17376 |
| Debian:14 | nova | 2:21.1.0-1 | DEBIAN-CVE-2020-17376 |
| PyPI | nova | 19.3.1 | GHSA-c7w7-9c85-4qxv |
| PyPI | nova | 19.3.1, 20.3.1, 21.1.0 | PYSEC-2020-243 |
| PyPI | nova | 20.3.1 | GHSA-c7w7-9c85-4qxv |
| PyPI | nova | no fix listed | GHSA-c7w7-9c85-4qxv |
Affected products (as reported)
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