# CVE-2023-29108: IP filter vulnerability in ABAP Platform and SAP Web Dispatcher

> Erroneous IP netmask handling in SAP Web Dispatcher allows unauthorized access to backend applications from unwanted sources.

- **Severity:** Medium 5.0 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/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:** 11 Apr 2023
- **Updated:** 12 Feb 2025
- **Also known as:** GHSA-9mr4-44xj-v8rg

## What is CVE-2023-29108?

CVE-2023-29108 is a medium-severity authentication bypass vulnerability in ABAP Platform and SAP Web Dispatcher, published on 11 Apr 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The IP filter in ABAP Platform and SAP Web Dispatcher - versions WEBDISP 7.85, 7.89, KERNEL 7.85, 7.89, 7.91, may be vulnerable by erroneous IP netmask handling. This may enable access to backend applications from unwanted sources.

Weakness: CWE-923 (Improper Restriction of Communication Channel to Intended Endpoints)

## Which versions are affected by CVE-2023-29108?

It affects 2 products.


Products: Sap Abap Platform Kernel, Sap Web Dispatcher.

## How do I fix CVE-2023-29108?

No fix has been published for CVE-2023-29108 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-29108 being exploited?

There is no known exploitation of CVE-2023-29108 in the wild and no public exploit code.

## Other vulnerabilities in ABAP Platform and SAP Web Dispatcher

- [CVE-2021-40501](https://insights.sbomify.com/CVE-2021-40501/): Missing authorization in SAP ABAP Platform Kernel (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-29108 and fix it if it is affected.

What it is: CVE-2023-29108 is a medium-severity authentication bypass vulnerability in ABAP Platform and SAP Web Dispatcher, published on 11 Apr 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-29108 in the wild and no public exploit code.

Affected product: ABAP Platform and SAP Web Dispatcher. 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-2023-29108/ (Markdown: https://insights.sbomify.com/CVE-2023-29108/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-29108
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-29108
- OSV: https://osv.dev/vulnerability/CVE-2023-29108

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-29108/
Summaries are generated and may contain mistakes; the official description above is the record.