# CVE-2015-8914: OpenStack Neutron allows remote attackers to bypass an intended ICMPv6-spoofing protection mechanism

> Remote attackers can bypass ICMPv6-spoofing protections in OpenStack Neutron to cause denial of service or intercept network traffic.

- **Severity:** Critical 9.1 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 17 Jun 2016
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2015-8914, GHSA-3vj4-cvjp-482h, PYSEC-2026-431

## What is CVE-2015-8914?

CVE-2015-8914 is a critical vulnerability in n/a, published on 17 Jun 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The IPTables firewall in OpenStack Neutron before 7.0.4 and 8.0.0 through 8.1.0 allows remote attackers to bypass an intended ICMPv6-spoofing protection mechanism and consequently cause a denial of service or intercept network traffic via a link-local source address.

Weakness: CWE-254

## Which versions are affected by CVE-2015-8914?

5 open source packages ship an affected version, including neutron. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `neutron` | PyPI | All versions | 7.0.5, 8.1.1 |
| `neutron` | PyPI | All versions | 7.0.5 |
| `neutron` | PyPI | All versions | 7.0.5 |
| `neutron` | PyPI | From 8.0.0 | 8.1.1 |
| `neutron` | PyPI | From 8.0.0 | 8.1.1 |

Products: Openstack Neutron.

## How do I fix CVE-2015-8914?

Upgrade neutron to a fixed version for your release line: 7.0.5 or 8.1.1.

## Is CVE-2015-8914 being exploited?

There is no known exploitation of CVE-2015-8914 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2021-38598](https://insights.sbomify.com/CVE-2021-38598/): OpenStack Neutron vulnerable to hardware address impersonation (critical 9.1)
- [CVE-2016-5362](https://insights.sbomify.com/CVE-2016-5362/): OpenStack Neutron allows remote attackers to bypass an intended DHCP-spoofing protection mechanism (high 8.2)
- [CVE-2016-5363](https://insights.sbomify.com/CVE-2016-5363/): OpenStack Neutron Intended MAC-spoofing protection mechanism bypass (high 8.2)
- [CVE-2014-3632](https://insights.sbomify.com/CVE-2014-3632/): Privilege escalation in n/a (high 7.6)
- [CVE-2021-20267](https://insights.sbomify.com/CVE-2021-20267/): Openstack Neutron has Insufficient Verification of IPv6 addresses (high 7.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2015-8914 and fix it if it is affected.

What it is: CVE-2015-8914 is a critical vulnerability in n/a, published on 17 Jun 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2015-8914 in the wild and no public exploit code.

Affected packages and fixed versions:
- neutron (PyPI): affected all versions; fixed in 7.0.5, 8.1.1
- neutron (PyPI): affected all versions; fixed in 7.0.5
- neutron (PyPI): affected all versions; fixed in 7.0.5
- neutron (PyPI): affected from 8.0.0; fixed in 8.1.1
- neutron (PyPI): affected from 8.0.0; fixed in 8.1.1

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2015-8914/ (Markdown: https://insights.sbomify.com/CVE-2015-8914/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-8914
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-8914
- OSV: https://osv.dev/vulnerability/CVE-2015-8914

---
From sbomify Insights: https://insights.sbomify.com/CVE-2015-8914/
Summaries are generated and may contain mistakes; the official description above is the record.