Denial of Service Vulnerability in OpenStack Nova by OpenStack
CVE-2017-17051

8.6HIGH

Key Information:

Vendor
Openstack
Status
Nova
Vendor
CVE Published:
5 December 2017

Summary

An issue in OpenStack Nova's default FilterScheduler allows an authenticated user to misuse resources on a hypervisor host. By repeatedly rebuilding instances with new images, an attacker can cause untracked resource consumption, leading to a denial of service scenario, as the process can unintentionally allocate double the required resources. This issue arises particularly in deployments using Nova stable/pike or later that have previously implemented a fix in response to OSSA-2017-005, highlighting a regression in resource management.

References

https://review.openstack.org/521662
x_refsource_CONFIRM
https://security.openstack.org/ossa/OSSA-2017-006.html
x_refsource_CONFIRM
https://review.openstack.org/523214
x_refsource_CONFIRM

CVSS V3.1

Score:
8.6
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.