CVE-2017-17051

Severity: high (CVSS 8.6 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-12-05 · updated 2026-06-17
Weakness: CWE-400

Description

An issue was discovered in the default FilterScheduler in OpenStack Nova 16.0.3. By repeatedly rebuilding an instance with new images, an authenticated user may consume untracked resources on a hypervisor host leading to a denial of service, aka doubled resource allocations. This regression was introduced with the fix for OSSA-2017-005 (CVE-2017-16239); however, only Nova stable/pike or later deployments with that fix applied and relying on the default FilterScheduler are affected.

Affected products

OpenStack Nova: 16.0.3

References

http://www.securityfocus.com/bid/102102
https://launchpad.net/bugs/1732976
https://review.openstack.org/521662
https://review.openstack.org/523214
https://security.openstack.org/ossa/OSSA-2017-006.html
http://www.securityfocus.com/bid/102102
https://launchpad.net/bugs/1732976
https://review.openstack.org/521662
https://review.openstack.org/523214
https://security.openstack.org/ossa/OSSA-2017-006.html

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