{"cve":"CVE-2013-4185","nvd":{"published":"2013-10-29T22:55:02.457","modified":"2026-06-16T23:56:46.600","status":"Modified","description":"Algorithmic complexity vulnerability in OpenStack Compute (Nova) before 2013.1.3 and Havana before havana-3 does not properly handle network source security group policy updates, which allows remote authenticated users to cause a denial of service (nova-network consumption) via a large number of server-creation operations, which triggers a large number of update requests.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-310"],"references":["http://rhn.redhat.com/errata/RHSA-2013-1199.html","http://seclists.org/oss-sec/2013/q3/282","https://bugs.launchpad.net/nova/+bug/1184041","http://rhn.redhat.com/errata/RHSA-2013-1199.html","http://seclists.org/oss-sec/2013/q3/282"],"products":["openstack:compute","redhat:openstack"],"source":"nvd","synced_at":"2026-10-19T20:30:15.895642412+00:00"},"epss":{"cve":"CVE-2013-4185","score":0.02105,"percentile":0.81742,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-ph2h-hh49-vh27","url":"https://osv.dev/vulnerability/GHSA-ph2h-hh49-vh27","summary":"OpenStack Nova Denial of Service in network source security groups","modified":"2026-07-07T11:56:12.622909684Z","packages":[{"ecosystem":"PyPI","name":"nova","purl":"pkg:pypi/nova","ranges":["<12.0.0a0"],"fixed":["12.0.0a0"]}]},{"id":"PYSEC-2026-879","url":"https://osv.dev/vulnerability/PYSEC-2026-879","summary":"OpenStack Nova Denial of Service in network source security groups","modified":"2026-07-07T11:45:49.061451474Z","packages":[{"ecosystem":"PyPI","name":"nova","purl":"pkg:pypi/nova","ranges":["<12.0.0a0"],"fixed":["12.0.0a0"]}]}],"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."]}