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Vulnerability record · CVE-2018-14635 · published 10 September 2018

CVE-2018-14635: Redhat openstack improper input validation vulnerability

Redhat · Openstack

When using the Linux bridge ml2 driver, non-privileged tenants are able to create and attach ports without specifying an IP address, bypassing IP address validation. A potential denial of service could occur if an IP address, conflicting with existing guests or routers, is then assigned from outside of the allowed allocation pool. Versions of openstack-neutron before 13.0.0.0b2, 12.0.3 and 11.0.5 are vulnerable.

6.5 CVSS 3.0 Medium EPSS 2.5% · top 14.9% CWE-20 · Improper input validation
6.5CVSS 3.0 base score, v2 4.0
2.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
14References
17 Jun 2026Last modified by NVD

Description

When using the Linux bridge ml2 driver, non-privileged tenants are able to create and attach ports without specifying an IP address, bypassing IP address validation. A potential denial of service could occur if an IP address, conflicting with existing guests or routers, is then assigned from outside of the allowed allocation pool. Versions of openstack-neutron before 13.0.0.0b2, 12.0.3 and 11.0.5 are vulnerable.

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/errata/RHSA-2018:2710 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2715 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2721 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3792 Third Party Advisory
https://bugs.launchpad.net/neutron/+bug/1757482 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14635 Issue TrackingPatchThird Party Advisory
https://git.openstack.org/cgit/openstack/neutron/commit/?id=54aa6e81cb17b33ce4d5d469cc11dec2869c762d PatchVendor Advisory
https://access.redhat.com/errata/RHSA-2018:2710 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2715 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2721 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3792 Third Party Advisory
https://bugs.launchpad.net/neutron/+bug/1757482 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14635 Issue TrackingPatchThird Party Advisory
https://git.openstack.org/cgit/openstack/neutron/commit/?id=54aa6e81cb17b33ce4d5d469cc11dec2869c762d PatchVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-14635), CISA KEV, FIRST EPSS (scores of 2026-11-14). This page is refreshed as NVD updates the record.