# CVE-2021-27598: Missing authorization in SAP NetWeaver AS for JAVA (Customer Usage Provisioning Servlet)

> An attacker can read statistical data such as product version and traffic due to missing authorization checks in the Customer Usage Provisioning Servlet.

- **Severity:** Medium 6.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Apr 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-rpg5-mh4w-rj47

## What is CVE-2021-27598?

CVE-2021-27598 is a medium-severity missing authorization vulnerability in Sap Netweaver Application Server Java, published on 13 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

SAP NetWeaver AS JAVA (Customer Usage Provisioning Servlet), versions - 7.31, 7.40, 7.50, allows an attacker to read some statistical data like product version, traffic, timestamp etc. because of missing authorization check in the servlet.

Weakness: CWE-862 (Missing Authorization), CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2021-27598?

It affects 1 product.


Products: Sap Netweaver Application Server Java.

## How do I fix CVE-2021-27598?

No fix has been published for CVE-2021-27598 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-27598 being exploited?

There is no known exploitation of CVE-2021-27598 in the wild and no public exploit code.

## Other vulnerabilities in Sap Netweaver Application Server Java

- [CVE-2020-6287](https://insights.sbomify.com/CVE-2020-6287/): SAP NetWeaver Missing Authentication for Critical Function (critical 10.0, exploited in the wild)
- [CVE-2010-5326](https://insights.sbomify.com/CVE-2010-5326/): SAP NetWeaver Remote Code Execution (critical 10.0, exploited in the wild)
- [CVE-2016-2386](https://insights.sbomify.com/CVE-2016-2386/): SAP NetWeaver SQL Injection (critical 9.8, exploited in the wild)
- [CVE-2017-12637](https://insights.sbomify.com/CVE-2017-12637/): SAP NetWeaver Directory Traversal (high 7.5, exploited in the wild)
- [CVE-2016-3976](https://insights.sbomify.com/CVE-2016-3976/): SAP NetWeaver Directory Traversal (high 7.5, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-27598 and fix it if it is affected.

What it is: CVE-2021-27598 is a medium-severity missing authorization vulnerability in Sap Netweaver Application Server Java, published on 13 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-27598 in the wild and no public exploit code.

Affected product: Sap Netweaver Application Server Java. 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-2021-27598/ (Markdown: https://insights.sbomify.com/CVE-2021-27598/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-27598
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-27598
- OSV: https://osv.dev/vulnerability/CVE-2021-27598

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-27598/
Summaries are generated and may contain mistakes; the official description above is the record.