# CVE-2017-11149: Server-side request forgery in Synology Download Station

> Authenticated attackers can exploit SSRF in Synology Download Station to read arbitrary local files via crafted URIs.

- **Severity:** Medium 6.5 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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:** 14 Aug 2017
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-p6v2-8cvh-3w66

## What is CVE-2017-11149?

CVE-2017-11149 is a medium-severity server-side request forgery vulnerability in Synology Download Station, published on 14 Aug 2017. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Server-side request forgery (SSRF) vulnerability in Downloader in Synology Download Station 3.8.x before 3.8.5-3475 and 3.x before 3.5-2984 allows remote authenticated users to download arbitrary local files via crafted URI.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2017-11149?

It affects 1 product.


Products: Synology Download Station.

## How do I fix CVE-2017-11149?

No fix has been published for CVE-2017-11149 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-11149 being exploited?

There is no known exploitation of CVE-2017-11149 in the wild and no public exploit code.

## Other vulnerabilities in Synology Download Station

- [CVE-2021-34809](https://insights.sbomify.com/CVE-2021-34809/): Command injection in Download Station (critical 9.9)
- [CVE-2021-34810](https://insights.sbomify.com/CVE-2021-34810/): Privilege escalation in Download Station (critical 9.9)
- [CVE-2017-11156](https://insights.sbomify.com/CVE-2017-11156/): File upload in Synology Download Station (high 7.8)
- [CVE-2021-33184](https://insights.sbomify.com/CVE-2021-33184/): Server-side request forgery in Synology Download Station (high 7.7)
- [CVE-2021-34811](https://insights.sbomify.com/CVE-2021-34811/): Server-side request forgery in Download Station (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-11149 and fix it if it is affected.

What it is: CVE-2017-11149 is a medium-severity server-side request forgery vulnerability in Synology Download Station, published on 14 Aug 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-2017-11149 in the wild and no public exploit code.

Affected product: Synology Download Station. 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-2017-11149/ (Markdown: https://insights.sbomify.com/CVE-2017-11149/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-11149
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-11149
- OSV: https://osv.dev/vulnerability/CVE-2017-11149

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-11149/
Summaries are generated and may contain mistakes; the official description above is the record.