# CVE-2017-16679: Open redirect in SAP Startup Service

> An attacker can redirect users to malicious sites via the SAP Startup Service, potentially facilitating phishing attacks.

- **Severity:** Medium 6.1 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 12 Dec 2017
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-757w-wphr-p72r

## What is CVE-2017-16679?

CVE-2017-16679 is a medium-severity vulnerability in SAP Startup Service, published on 12 Dec 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

URL redirection vulnerability in SAP's Startup Service, SAP KERNEL 32 NUC, SAP KERNEL 32 Unicode, SAP KERNEL 64 NUC, SAP KERNEL 64 Unicode 7.21, 7.21EXT, 7.22 and 7.22EXT; SAP KERNEL 7.21, 7.22, 7.45, 7.49 and 7.52, that allows an attacker to redirect users to a malicious site.

Weakness: CWE-601 (URL Redirection to Untrusted Site)

## Which versions are affected by CVE-2017-16679?

It affects 1 product.


Products: Sap Sap Kernel.

## How do I fix CVE-2017-16679?

No fix has been published for CVE-2017-16679 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-16679 being exploited?

There is no known exploitation of CVE-2017-16679 in the wild and no public exploit code.

## Other vulnerabilities in SAP Startup Service

- [CVE-2017-16689](https://insights.sbomify.com/CVE-2017-16689/): Auth bypass in Trusted RFC connection (high 8.8)
- [CVE-2019-0365](https://insights.sbomify.com/CVE-2019-0365/): Denial of service in SAP GUI for Java (BC-FES-JAV) (high 7.5)
- [CVE-2018-2433](https://insights.sbomify.com/CVE-2018-2433/): Denial of service in SAP Gateway (high 7.5)
- [CVE-2018-2360](https://insights.sbomify.com/CVE-2018-2360/): Missing authorization in SAP Startup Service (high 7.5)
- [CVE-2017-5997](https://insights.sbomify.com/CVE-2017-5997/): Denial of service in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-16679 and fix it if it is affected.

What it is: CVE-2017-16679 is a medium-severity vulnerability in SAP Startup Service, published on 12 Dec 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2017-16679 in the wild and no public exploit code.

Affected product: SAP Startup Service. 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-2017-16679/ (Markdown: https://insights.sbomify.com/CVE-2017-16679/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-16679
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-16679
- OSV: https://osv.dev/vulnerability/CVE-2017-16679

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-16679/
Summaries are generated and may contain mistakes; the official description above is the record.