CVE-2019-9735: OpenStack Neutron's unsupported dport option prevents applying security groups

CVE-2019-9735 · Severity: low · CVSS 3 · Published 2019-03-13

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.)

Technologies: neutron (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2019-9735 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2019-9735 being exploited in the wild.
How severe is CVE-2019-9735?
Low severity, with a CVSS score of 3, published 13 March 2019.
Which products and versions are affected?
neutron (PyPI) ECOSYSTEM:introduced=0,fixed=10.0.8, ECOSYSTEM:introduced=12.0.0,fixed=12.0.6,introduced=13.0.0,fixed=13.0.3,introduced=11.0.0,fixed=11.0.7,introduced=0,fixed=10.0.8.
Is there a fix for CVE-2019-9735?
Yes. neutron (PyPI): upgrade to 10.0.8 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2019-9735?
Check whether you run neutron (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • neutron (PyPI): upgrade to 10.0.8 or later
    pip install "neutron>=10.0.8"

Affected products

  • neutron (PyPI) ECOSYSTEM:introduced=0,fixed=10.0.8, ECOSYSTEM:introduced=12.0.0,fixed=12.0.6,introduced=13.0.0,fixed=13.0.3,introduced=11.0.0,fixed=11.0.7,introduced=0,fixed=10.0.8

Identifiers

  • CVE-2019-9735
  • GHSA-9773-3fqg-8w25
  • PYSEC-2019-190

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.