# CVE-2017-14730: Privilege escalation in n/a

> Local attackers can escalate privileges via hard link attacks on user-writable directories in the Logstash init script.

- **Severity:** High 7.8 (`CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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:** 25 Sep 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-v7gq-9pxc-6wm9

## What is CVE-2017-14730?

CVE-2017-14730 is a high-severity vulnerability in n/a, published on 25 Sep 2017. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The init script in the Gentoo app-admin/logstash-bin package before 5.5.3 and 5.6.x before 5.6.1 has "chown -R" calls for user-writable directory trees, which allows local users to gain privileges by leveraging access to a $LS_USER account for creation of a hard link.

Weakness: CWE-732 (Incorrect Permission Assignment for Critical Resource)

## Which versions are affected by CVE-2017-14730?

It affects 1 product.


Products: Elasticsearch Logstash.

## How do I fix CVE-2017-14730?

No fix has been published for CVE-2017-14730 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-14730 being exploited?

There is no known exploitation of CVE-2017-14730 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-14730 and fix it if it is affected.

What it is: CVE-2017-14730 is a high-severity vulnerability in n/a, published on 25 Sep 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-2017-14730 in the wild and no public exploit code.

Affected product: n/a. 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-2017-14730/ (Markdown: https://insights.sbomify.com/CVE-2017-14730/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-14730
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-14730
- OSV: https://osv.dev/vulnerability/CVE-2017-14730

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-14730/
Summaries are generated and may contain mistakes; the official description above is the record.