# CVE-2017-2327: Denial of service in NorthStar Controller Application

> An authenticated user can cause a denial of service by consuming system resources in the Juniper NorthStar Controller.

- **Severity:** Medium 5.5 (`CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Apr 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-5q95-7rfv-6w73

## What is CVE-2017-2327?

CVE-2017-2327 is a medium-severity denial of service vulnerability in Juniper Networks NorthStar Controller Application, published on 24 Apr 2017. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A denial of service vulnerability in Juniper Networks NorthStar Controller Application prior to version 2.1.0 Service Pack 1 may allow an authenticated malicious user to consume large amounts of system resources leading to a cascading denial of services.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2017-2327?

It affects 1 product.


Products: Juniper Northstar Controller.

## How do I fix CVE-2017-2327?

No fix has been published for CVE-2017-2327 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-2327 being exploited?

There is no known exploitation of CVE-2017-2327 in the wild and no public exploit code.

## Other vulnerabilities in Juniper Networks NorthStar Controller Application

- [CVE-2017-2320](https://insights.sbomify.com/CVE-2017-2320/): Information disclosure in NorthStar Controller Application (critical 10.0)
- [CVE-2017-2332](https://insights.sbomify.com/CVE-2017-2332/): Auth bypass in NorthStar Controller Application (high 8.8)
- [CVE-2017-2317](https://insights.sbomify.com/CVE-2017-2317/): Denial of service in NorthStar Controller Application (high 8.6)
- [CVE-2017-2321](https://insights.sbomify.com/CVE-2017-2321/): Other in NorthStar Controller Application (high 8.6)
- [CVE-2017-2319](https://insights.sbomify.com/CVE-2017-2319/): Auth bypass in NorthStar Controller Application (high 8.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-2327 and fix it if it is affected.

What it is: CVE-2017-2327 is a medium-severity denial of service vulnerability in Juniper Networks NorthStar Controller Application, published on 24 Apr 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2017-2327 in the wild and no public exploit code.

Affected product: Juniper Networks NorthStar Controller Application. No package-level version data is available, so check the vendor advisory linked from the reference page.

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-2017-2327/ (Markdown: https://insights.sbomify.com/CVE-2017-2327/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-2327
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-2327
- OSV: https://osv.dev/vulnerability/CVE-2017-2327

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-2327/
Summaries are generated and may contain mistakes; the official description above is the record.