6.5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
8.3 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
6.8 Medium
AI Score
Confidence
Low
0.002 Low
EPSS
Percentile
54.2%
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.
www.openwall.com/lists/oss-security/2020/08/25/4
github.com/advisories/GHSA-c7w7-9c85-4qxv
github.com/openstack/nova/commit/1bb8ee95d4c3ddc3f607ac57526b75af1b7fbcff
github.com/openstack/nova/commit/2faf17995dd9daa6f0b91e44be43264e447c678d
github.com/openstack/nova/commit/a721ca5f510ce3c8ef24f22dac9e475b3d7651db
github.com/openstack/nova/commit/b9ea91d17703f5b324a50727b6503ace0f4e95eb
github.com/openstack/nova/commit/c438fd9a0eb1903306a53ab44e3ae80660d8a429
launchpad.net/bugs/1890501
nvd.nist.gov/vuln/detail/CVE-2020-17376
security.openstack.org/ossa/OSSA-2020-006.html
6.5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
8.3 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
6.8 Medium
AI Score
Confidence
Low
0.002 Low
EPSS
Percentile
54.2%