{"id":"CVE-2019-9735","aliases":["GHSA-9773-3fqg-8w25","PYSEC-2019-190"],"url":"https://o3.security/vulnerability/CVE-2019-9735","summary":"OpenStack Neutron's unsupported dport option prevents applying security groups","details":"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.)","published":"2019-03-13T02:29:00.277Z","modified":"2026-07-08T05:55:12.004451230Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"PyPI","name":"neutron","fixedVersion":"10.0.8"},{"ecosystem":"PyPI","name":"neutron","fixedVersion":"11.0.7"},{"ecosystem":"PyPI","name":"neutron","fixedVersion":"12.0.6"},{"ecosystem":"PyPI","name":"neutron","fixedVersion":"13.0.3"}],"fix":null,"references":[{"type":"WEB","url":"https://usn.ubuntu.com/4036-1/"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2019/03/18/2"},{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/107390"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:0879"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:0916"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:0935"},{"type":"ADVISORY","url":"https://seclists.org/bugtraq/2019/Mar/24"},{"type":"ADVISORY","url":"https://www.debian.org/security/2019/dsa-4409"},{"type":"FIX","url":"https://launchpad.net/bugs/1818385"},{"type":"FIX","url":"https://security.openstack.org/ossa/OSSA-2019-001.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T05:55:12.004451230Z"}}