# CVE-2023-23857: Improper Access Control in SAP NetWeaver AS for Java

> Unauthenticated attackers can access open interfaces to read, modify sensitive data, or cause denial of service in SAP NetWeaver AS for Java.

- **Severity:** Critical 9.9 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Mar 2023
- **Updated:** 27 Feb 2025
- **Also known as:** GHSA-qvvv-8vv2-8m46

## What is CVE-2023-23857?

CVE-2023-23857 is a critical missing authorization vulnerability in SAP NetWeaver AS for Java, published on 14 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Due to missing authentication check, SAP NetWeaver AS for Java - version 7.50, allows an unauthenticated attacker to attach to an open interface and make use of an open naming and directory API to access services which can be used to perform unauthorized operations affecting users and services across systems. On a successful exploitation, the attacker can read and modify some sensitive information but can also be used to lock up any element or operation of the system making that it unresponsive or unavailable.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2023-23857?

It affects 1 product.


Products: Sap Netweaver Application Server for Java.

## How do I fix CVE-2023-23857?

No fix has been published for CVE-2023-23857 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-23857 being exploited?

There is no known exploitation of CVE-2023-23857 in the wild and no public exploit code.

## Other vulnerabilities in SAP NetWeaver AS for Java

- [CVE-2023-0017](https://insights.sbomify.com/CVE-2023-0017/): Improper access control in SAP NetWeaver AS for Java (critical 9.4)
- [CVE-2021-27635](https://insights.sbomify.com/CVE-2021-27635/): XML external entity in SAP NetWeaver AS for JAVA (critical 9.0)
- [CVE-2023-30744](https://insights.sbomify.com/CVE-2023-30744/): Improper access control during application start-up in SAP AS NetWeaver JAVA. (high 8.2)
- [CVE-2022-27669](https://insights.sbomify.com/CVE-2022-27669/): Missing authorization in SAP NetWeaver Application Server for Java (high 7.5)
- [CVE-2021-27621](https://insights.sbomify.com/CVE-2021-27621/): Information disclosure in SAP NetWeaver AS for Java (UserAdmin) (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-23857 and fix it if it is affected.

What it is: CVE-2023-23857 is a critical missing authorization vulnerability in SAP NetWeaver AS for Java, published on 14 Mar 2023. 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-2023-23857 in the wild and no public exploit code.

Affected product: SAP NetWeaver AS for 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-2023-23857/ (Markdown: https://insights.sbomify.com/CVE-2023-23857/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-23857
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-23857
- OSV: https://osv.dev/vulnerability/CVE-2023-23857

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-23857/
Summaries are generated and may contain mistakes; the official description above is the record.