CVE Vulnerability

CVE-2020-17376

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.

6.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

8.3 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References
Link Resource
https://launchpad.net/bugs/1890501 Exploit Third Party Advisory
https://security.openstack.org/ossa/OSSA-2020-006.html Patch Vendor Advisory
http://www.openwall.com/lists/oss-security/2020/08/25/4 Mailing List Patch
Configurations

Configuration 1

cpe:2.3:a:openstack:nova:21.0.0:*:*:*:*:*:*:*
cpe:2.3:a:openstack:nova:*:*:*:*:*:*:*:*
cpe:2.3:a:openstack:nova:*:*:*:*:*:*:*:*
Information

Published : 2020-08-26 07:15

Updated : 2020-09-14 07:00

NVD link : CVE-2020-17376

Mitre link : CVE-2020-17376

Products Affected
No products.
CWE
CWE-611

Improper Restriction of XML External Entity Reference