# CVE-2017-8441: Missing authorization in X-Pack Security

> A flaw in Elastic X-Pack Security allowed users with restricted permissions to view unauthorized data via index aliases.

- **Severity:** Medium 4.3 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Jun 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-5r8r-2h6m-393g

## What is CVE-2017-8441?

CVE-2017-8441 is a medium-severity missing authorization vulnerability in Elastic X-Pack Security, published on 5 Jun 2017. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Elastic X-Pack Security versions prior to 5.4.1 and 5.3.3 did not always correctly apply Document Level Security to index aliases. This bug could allow a user with restricted permissions to view data they should not have access to when performing certain operations against an index alias.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor), CWE-279 (Incorrect Execution-Assigned Permissions)

## Which versions are affected by CVE-2017-8441?

It affects 1 product.


Products: Elastic X-Pack.

## How do I fix CVE-2017-8441?

No fix has been published for CVE-2017-8441 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-8441 being exploited?

There is no known exploitation of CVE-2017-8441 in the wild and no public exploit code.

## Other vulnerabilities in Elastic X-Pack Security

- [CVE-2018-3822](https://insights.sbomify.com/CVE-2018-3822/): Auth bypass in X-Pack Security (critical 9.8)
- [CVE-2017-8448](https://insights.sbomify.com/CVE-2017-8448/): Privilege escalation in Elastic X-Pack Alerting (high 8.8)
- [CVE-2017-8438](https://insights.sbomify.com/CVE-2017-8438/): Privilege escalation in X-Pack Security (high 8.8)
- [CVE-2017-8450](https://insights.sbomify.com/CVE-2017-8450/): Missing authorization in Elastic X-Pack Security (high 7.5)
- [CVE-2017-8447](https://insights.sbomify.com/CVE-2017-8447/): Privilege escalation in Elastic X-Pack Security (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-8441 and fix it if it is affected.

What it is: CVE-2017-8441 is a medium-severity missing authorization vulnerability in Elastic X-Pack Security, published on 5 Jun 2017. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2017-8441 in the wild and no public exploit code.

Affected product: Elastic X-Pack Security. 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-2017-8441/ (Markdown: https://insights.sbomify.com/CVE-2017-8441/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-8441
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-8441
- OSV: https://osv.dev/vulnerability/CVE-2017-8441

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-8441/
Summaries are generated and may contain mistakes; the official description above is the record.