What is CVE-2018-14636?

CVE-2018-14636 is a medium-severity security vulnerability in neutron (pip), affecting versions = 13.0.0.0b1. It is fixed in 13.0.0.0b2, 12.0.3, 11.0.5.

How severe is CVE-2018-14636?

CVE-2018-14636 has a CVSS score of 5.3 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.

Which versions of neutron are affected by CVE-2018-14636?

neutron (pip) versions = 13.0.0.0b1 is affected.

Is there a fix for CVE-2018-14636?

Yes. CVE-2018-14636 is fixed in 13.0.0.0b2, 12.0.3, 11.0.5. Upgrade to this version or later.

Is CVE-2018-14636 exploitable, and should I be worried?

Whether CVE-2018-14636 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

What actually determines whether CVE-2018-14636 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

CVE-2018-14636 in neutron

Q: How do I fix CVE-2018-14636?

Upgrade: neutron to 13.0.0.0b2 or later, neutron to 12.0.3 or later, neutron to 11.0.5 or later.

Summary

Openstack Neutron vulnerable to eavesdropping on private traffic

Live-migrated instances are briefly able to inspect traffic for other instances on the same hypervisor. This brief window could be extended indefinitely if the instance's port is set administratively down prior to live-migration and kept down after the migration is complete. This is possible due to the Open vSwitch integration bridge being connected to the instance during migration. When connected to the integration bridge, all traffic for instances using the same Open vSwitch instance would potentially be visible to the migrated guest, as the required Open vSwitch VLAN filters are only applied post-migration. Versions of openstack-neutron before 13.0.0.0b2, 12.0.3, 11.0.5 are vulnerable.

Impact

CVE-2018-14636 has a CVSS score of 5.3 (Medium). The vector is network-reachable, low privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (13.0.0.0b2, 12.0.3, 11.0.5); upgrading removes the vulnerable code path.

Affected versions

neutron (= 13.0.0.0b1) neutron (>= 12.0.0, < 12.0.3) neutron (>= 11.0.0, < 11.0.5)

Security releases

neutron → 13.0.0.0b2 (pip) neutron → 12.0.3 (pip) neutron → 11.0.5 (pip)

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

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Remediation advice

Upgrade the following packages to resolve this vulnerability:

neutron to 13.0.0.0b2 or later; neutron to 12.0.3 or later; neutron to 11.0.5 or later

Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.

Frequently Asked Questions

What is CVE-2018-14636? CVE-2018-14636 is a medium-severity security vulnerability in neutron (pip), affecting versions = 13.0.0.0b1. It is fixed in 13.0.0.0b2, 12.0.3, 11.0.5.
How severe is CVE-2018-14636? CVE-2018-14636 has a CVSS score of 5.3 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
Which versions of neutron are affected by CVE-2018-14636? neutron (pip) versions = 13.0.0.0b1 is affected.
Is there a fix for CVE-2018-14636? Yes. CVE-2018-14636 is fixed in 13.0.0.0b2, 12.0.3, 11.0.5. Upgrade to this version or later.
Is CVE-2018-14636 exploitable, and should I be worried? Whether CVE-2018-14636 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
What actually determines whether CVE-2018-14636 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
How do I fix CVE-2018-14636?
- Upgrade neutron to 13.0.0.0b2 or later
- Upgrade neutron to 12.0.3 or later
- Upgrade neutron to 11.0.5 or later

Other vulnerabilities in neutron

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