CVE-2019-9735
No exploitation reported by the sources we read.
- Published2019-03-13
- Fixed in13.0.3 · 12.0.6 · 11.0.7 · 10.0.8
- WeaknessCWE-755
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
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.)
Timeline
dates in UTC- 2019-03-1302:29CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-9735?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-9735?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD · OSV| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 13.0 | ≥ 13.0.0, < 13.0.3 | 13.0.3 | NVD · OSV |
| 12.0 | ≥ 12.0.0, < 12.0.6 | 12.0.6 | NVD · OSV |
| 11.0 | ≥ 11.0.0, < 11.0.7 | 11.0.7 | NVD · OSV |
| 10.0 | < 10.0.8 | 10.0.8 | NVD · OSV |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 10.x | = 10 | no fix published | NVD |
| 13.x | = 13 | no fix published | NVD |
| 14.x | = 14 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 9.0 | = 9.0 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
openstack-neutron: incorrect validation of port settings in iptables security group driver
Red Hat Security Advisory: openstack-neutron security update
Red Hat Security Advisory: openstack-neutron security and bug fix update
Red Hat Security Advisory: Red Hat Enterprise Linux OpenStack Platform security update
Fix
- Update Openstack neutron to 13.0.3 · 12.0.6 · 11.0.7 · 10.0.8
- Vendor fix Red Hat Product Security RHSA-2019:0879 · 11 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Advisories and patches
- launchpad.netPatch
- security.openstack.orgPatch · Vendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.06.5read 2026-10-23
- NVDCVSS 2.04read 2026-10-23
- NVDweakness (CWE)CWE-755read 2026-10-23
- FIRST EPSSEPSS score3.7 %2026-10-23
- OSVaffected packages—
Technical details
- CVSS v3 Vector
- CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Published
- 2019-03-13
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2019-9735?
Is CVE-2019-9735 actively exploited?
What is the CVSS score for CVE-2019-9735?
Running neutron? Hear about its next vulnerability
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.