# CVE-2023-31403: Improper Access Control vulnerability in SAP Business One product installation

> Attackers can read, write, and execute files in the SMB shared folder due to missing authentication checks in SAP Business One installation.

- **Severity:** Critical 9.6 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Nov 2023
- **Updated:** 11 Jun 2025
- **Also known as:** GHSA-mphg-6g5j-93fg

## What is CVE-2023-31403?

CVE-2023-31403 is a critical missing authorization vulnerability in SAP_SE SAP Business One, published on 14 Nov 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

SAP Business One installation - version 10.0, does not perform proper authentication and authorization checks for SMB shared folder. As a result, any malicious user can read and write to the SMB shared folder. Additionally, the files in the folder can be executed or be used by the installation process leading to considerable impact on confidentiality, integrity and availability.

Weakness: CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2023-31403?

It affects 1 product.


Products: Sap Business One.

## How do I fix CVE-2023-31403?

No fix has been published for CVE-2023-31403 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-31403 being exploited?

There is no known exploitation of CVE-2023-31403 in the wild and no public exploit code.

## Other vulnerabilities in SAP_SE SAP Business One

- [CVE-2021-33698](https://insights.sbomify.com/CVE-2021-33698/): File upload in SAP Business One (critical 9.9)
- [CVE-2021-38180](https://insights.sbomify.com/CVE-2021-38180/): Code injection in SAP Business One (critical 9.8)
- [CVE-2016-6256](https://insights.sbomify.com/CVE-2016-6256/): XML external entity in n/a (critical 9.6)
- [CVE-2022-31593](https://insights.sbomify.com/CVE-2022-31593/): Code injection in SAP Business One (high 8.8)
- [CVE-2018-2425](https://insights.sbomify.com/CVE-2018-2425/): Information disclosure in SAP Business One (high 8.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-31403 and fix it if it is affected.

What it is: CVE-2023-31403 is a critical missing authorization vulnerability in SAP_SE SAP Business One, published on 14 Nov 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-31403 in the wild and no public exploit code.

Affected product: SAP_SE SAP Business One. 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-2023-31403/ (Markdown: https://insights.sbomify.com/CVE-2023-31403/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-31403
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-31403
- OSV: https://osv.dev/vulnerability/CVE-2023-31403

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-31403/
Summaries are generated and may contain mistakes; the official description above is the record.