What is CVE-2017-5936?

CVE-2017-5936 is a high-severity security vulnerability in nova-lxd (pip), affecting versions < 13.1.1. It is fixed in 13.1.1.

How severe is CVE-2017-5936?

CVE-2017-5936 has a CVSS score of 7.5 (High). 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 nova-lxd are affected by CVE-2017-5936?

nova-lxd (pip) versions < 13.1.1 is affected.

Is there a fix for CVE-2017-5936?

Yes. CVE-2017-5936 is fixed in 13.1.1. Upgrade to this version or later.

Is CVE-2017-5936 exploitable, and should I be worried?

Whether CVE-2017-5936 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-2017-5936 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-2017-5936 in nova-lxd

Q: How severe is CVE-2017-5936?

CVE-2017-5936 has a CVSS score of 7.5 (High). 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.

Q: Which versions of nova-lxd are affected by CVE-2017-5936?

nova-lxd (pip) versions < 13.1.1 is affected.

Q: Is there a fix for CVE-2017-5936?

Yes. CVE-2017-5936 is fixed in 13.1.1. Upgrade to this version or later.

Q: Is CVE-2017-5936 exploitable, and should I be worried?

Whether CVE-2017-5936 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.

Q: What actually determines whether CVE-2017-5936 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.

Q: How do I fix CVE-2017-5936?

Upgrade nova-lxd to 13.1.1 or later.

Summary

OpenStack Nova-LXD bypass security restrictions

OpenStack Nova-LXD before 13.1.1 uses the wrong name for the veth pairs when applying Neutron security group rules for instances, which allows remote attackers to bypass intended security restrictions.

Impact

CVE-2017-5936 has a CVSS score of 7.5 (High). The vector is network-reachable, no 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 (13.1.1); upgrading removes the vulnerable code path.

Affected versions

nova-lxd (< 13.1.1)

Security releases

nova-lxd → 13.1.1 (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 nova-lxd to 13.1.1 or later to resolve this vulnerability.

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

Frequently Asked Questions

What is CVE-2017-5936? CVE-2017-5936 is a high-severity security vulnerability in nova-lxd (pip), affecting versions < 13.1.1. It is fixed in 13.1.1.
How severe is CVE-2017-5936? CVE-2017-5936 has a CVSS score of 7.5 (High). 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 nova-lxd are affected by CVE-2017-5936? nova-lxd (pip) versions < 13.1.1 is affected.
Is there a fix for CVE-2017-5936? Yes. CVE-2017-5936 is fixed in 13.1.1. Upgrade to this version or later.
Is CVE-2017-5936 exploitable, and should I be worried? Whether CVE-2017-5936 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-2017-5936 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-2017-5936? Upgrade nova-lxd to 13.1.1 or later.