{"cve":"CVE-2019-9735","nvd":{"published":"2019-03-13T02:29:00.277","modified":"2026-06-17T02:44:15.243","status":"Modified","description":"An issue was discovered in the iptables firewall module in OpenStack Neutron before 10.0.8, 11.x before 11.0.7, 12.x before 12.0.6, and 13.x before 13.0.3. By setting a destination port in a security group rule along with a protocol that doesn't support that option (for example, VRRP), an authenticated user may block further application of security group rules for instances from any project/tenant on the compute hosts to which it's applied. (Only deployments using the iptables security group driver are affected.)","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-755"],"references":["http://www.openwall.com/lists/oss-security/2019/03/18/2","http://www.securityfocus.com/bid/107390","https://access.redhat.com/errata/RHSA-2019:0879","https://access.redhat.com/errata/RHSA-2019:0916","https://access.redhat.com/errata/RHSA-2019:0935"],"products":["debian:debian_linux","openstack:neutron","redhat:openstack"],"source":"nvd","synced_at":"2026-10-19T20:55:22.313337056+00:00"},"epss":{"cve":"CVE-2019-9735","score":0.03705,"percentile":0.89745,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-9773-3fqg-8w25","url":"https://osv.dev/vulnerability/GHSA-9773-3fqg-8w25","summary":"OpenStack Neutron's unsupported dport option prevents applying security groups","modified":"2024-10-03T21:33:52.025608Z","packages":[{"ecosystem":"PyPI","name":"neutron","purl":"pkg:pypi/neutron","ranges":["<10.0.8"],"fixed":["10.0.8"]},{"ecosystem":"PyPI","name":"neutron","purl":"pkg:pypi/neutron","ranges":[">=11.0.0 <11.0.7"],"fixed":["11.0.7"]},{"ecosystem":"PyPI","name":"neutron","purl":"pkg:pypi/neutron","ranges":[">=12.0.0 <12.0.6"],"fixed":["12.0.6"]},{"ecosystem":"PyPI","name":"neutron","purl":"pkg:pypi/neutron","ranges":[">=13.0.0 <13.0.3"],"fixed":["13.0.3"]}]},{"id":"PYSEC-2019-190","url":"https://osv.dev/vulnerability/PYSEC-2019-190","summary":"","modified":"2026-06-10T17:02:23.658094129Z","packages":[{"ecosystem":"PyPI","name":"neutron","purl":"pkg:pypi/neutron","ranges":[">=12.0.0 <12.0.6",">=13.0.0 <13.0.3",">=11.0.0 <11.0.7","<10.0.8"],"fixed":["12.0.6","13.0.3","11.0.7","10.0.8"]}]}],"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."]}