{"cve":"CVE-2017-17051","nvd":{"published":"2017-12-05T18:29:00.227","modified":"2026-06-17T01:10:16.473","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","score":8.6},"cwes":["CWE-400"],"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"],"products":["openstack:nova"],"source":"nvd","synced_at":"2026-10-19T20:47:01.408438353+00:00"},"epss":{"cve":"CVE-2017-17051","score":0.01989,"percentile":0.80638,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-vq76-rxx3-4r4r","url":"https://osv.dev/vulnerability/GHSA-vq76-rxx3-4r4r","summary":"OpenStack Nova DoS by rebuilding the same instance with a new image multiple times","modified":"2026-07-06T08:11:07.747192250Z","packages":[{"ecosystem":"PyPI","name":"nova","purl":"pkg:pypi/nova","ranges":["<16.0.4"],"fixed":["16.0.4"]}]},{"id":"PYSEC-2026-692","url":"https://osv.dev/vulnerability/PYSEC-2026-692","summary":"OpenStack Nova DoS by rebuilding the same instance with a new image multiple times","modified":"2026-07-06T08:00:47.619952818Z","packages":[{"ecosystem":"PyPI","name":"nova","purl":"pkg:pypi/nova","ranges":["<16.0.4"],"fixed":["16.0.4"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}