CVE-2019-9735
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.
Does this matter?
Lower severity and a low EPSS score (3.71%). Track it; it rarely justifies an emergency change on its own.
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 3.0
- 6.5 MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 3.71% probability · 90th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-755
- Affected
- openstack/neutron · redhat/openstack · debian/debian linux
- Source
- cve@mitre.org
EPSS 3.7% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.openwall.com/lists/oss-security/2019/03/18/2Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/107390Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:0879Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0916Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0935Third Party Advisory
- https://launchpad.net/bugs/1818385Exploit, Issue Tracking, Patch, Third Party Advisory
- https://seclists.org/bugtraq/2019/Mar/24Mailing List, Third Party Advisory
- https://security.openstack.org/ossa/OSSA-2019-001.htmlPatch, Vendor Advisory
- https://usn.ubuntu.com/4036-1/
- https://www.debian.org/security/2019/dsa-4409Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/03/18/2Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/107390Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:0879Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0916Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0935Third Party Advisory
- https://launchpad.net/bugs/1818385Exploit, Issue Tracking, Patch, Third Party Advisory
- https://seclists.org/bugtraq/2019/Mar/24Mailing List, Third Party Advisory
- https://security.openstack.org/ossa/OSSA-2019-001.htmlPatch, Vendor Advisory
- https://usn.ubuntu.com/4036-1/
- https://www.debian.org/security/2019/dsa-4409Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.