An issue was discovered in the iptables firewall module in OpenStack Neutron before…
Priority LOW 35CWE-755Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA, GitHub and Red Hat.
Summary
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.)
Why it matters now
EPSS 0.03705 89th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed neutron (PyPI): 10.0.8, 11.0.7, 12.0.6 +1Red Hat: 3 advisories
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | neutron (PyPI) | before 10.0.8 | 10.0.8 | Patch available | GHSA-9773-3fqg-8w25 |
| — | neutron (PyPI) | 11.0.0 to before 11.0.7 | 11.0.7 | Patch available | GHSA-9773-3fqg-8w25 |
| — | neutron (PyPI) | 12.0.0 to before 12.0.6 | 12.0.6 | Patch available | GHSA-9773-3fqg-8w25 |
| — | neutron (PyPI) | 13.0.0 to before 13.0.3 | 13.0.3 | Patch available | GHSA-9773-3fqg-8w25 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- neutron (PyPI) Vendor— Affected before 10.0.8 Fixed in 10.0.8 Patch available GHSA-9773-3fqg-8w25
- neutron (PyPI) Vendor— Affected 11.0.0 to before 11.0.7 Fixed in 11.0.7 Patch available GHSA-9773-3fqg-8w25
- neutron (PyPI) Vendor— Affected 12.0.0 to before 12.0.6 Fixed in 12.0.6 Patch available GHSA-9773-3fqg-8w25
- neutron (PyPI) Vendor— Affected 13.0.0 to before 13.0.3 Fixed in 13.0.3 Patch available GHSA-9773-3fqg-8w25
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:* | before 10.0.8; 11.0.0 to before 11.0.7; 12.0.0 to before 12.0.6; 13.0.0 to before 13.0.3 | Vulnerable | OpenStack |
| cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:* | 10 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:* | 13 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:openstack:14:*:*:*:*:*:*:* | 14 | Vulnerable | Red Hat |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
- cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:* Versions before 10.0.8; 11.0.0 to before 11.0.7; 12.0.0 to before 12.0.6; 13.0.0 to before 13.0.3 Vulnerable ·OpenStack
- cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:* Versions 10 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:* Versions 13 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:openstack:14:*:*:*:*:*:*:* Versions 14 Vulnerable ·Red Hat
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
Remediation
- Fix · GHSA-9773-3fqg-8w25 neutron (PyPI) Fixed in 10.0.8 Advisory →
- Fix · GHSA-9773-3fqg-8w25 neutron (PyPI) Fixed in 11.0.7 Advisory →
- Fix · GHSA-9773-3fqg-8w25 neutron (PyPI) Fixed in 12.0.6 Advisory →
- Fix · GHSA-9773-3fqg-8w25 neutron (PyPI) Fixed in 13.0.3 Advisory →
Red Hat 3 advisories
- RHSA-2019:0879 Released 2019-04-30 · Red Hat rating Importantopenstack-neutron security update
- Red Hat OpenStack Platform 14.0 openstack-neutron-1:13.0.3-0.20190313155649.00b63be.el7ost, openstack-neutron-common-1:13.0.3-0.20190313155649.00b63be.el7ost, openstack-neutron-linuxbridge-1:13.0.3-0.20190313155649.00b63be.el7ost +7
- RHSA-2019:0935 Released 2019-04-30 · Red Hat rating Importantopenstack-neutron security and bug fix update
- Red Hat OpenStack Platform 13.0 openstack-neutron-1:12.0.5-11.el7ost, openstack-neutron-common-1:12.0.5-11.el7ost, openstack-neutron-linuxbridge-1:12.0.5-11.el7ost +7
- RHSA-2019:0916 Released 2019-04-30 · Red Hat rating ImportantRed Hat Enterprise Linux OpenStack Platform security update
- Red Hat OpenStack Platform 10.0 openstack-neutron-1:9.4.1-40.el7ost, openstack-neutron-bigswitch-agent-2:9.42.14-1.el7ost, openstack-neutron-bigswitch-lldp-2:9.42.14-1.el7ost +14
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenStack Platform 10.0 | Fixed | RHSA-2019:0916 |
| Red Hat OpenStack Platform 13.0 | Fixed | RHSA-2019:0935 |
| Red Hat OpenStack Platform 14.0 | Fixed | RHSA-2019:0879 |
Not affected: 3 products
- Red Hat OpenStack Platform 15 (Stein)
- Red Hat OpenStack Platform 8 (Liberty)
- Red Hat OpenStack Platform 9 (Mitaka)
Timeline
- 2026-10-02 Threatist record created from CVE-2019-9735
- 2026-10-03 Alias added: GHSA-9773-3fqg-8w25
References
Exploit 1
Advisory 8
Sources
- CVE-2019-9735 · CVE Program
- CVE-2019-9735 · NVD
- FIRST EPSS
- GHSA-9773-3fqg-8w25 · GitHub Advisory Database · CC BY 4.0
- CVE-2019-9735 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences