# CVE-2023-40235: Information disclosure in n/a

> Attackers can disclose NTLM hashes by tricking users into opening malicious ArchiMate files with crafted XMLNS values.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/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:** 10 Aug 2023
- **Updated:** 9 Oct 2024
- **Also known as:** GHSA-6252-3qpx-9rww

## What is CVE-2023-40235?

CVE-2023-40235 is a medium-severity vulnerability in n/a, published on 10 Aug 2023. 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

An NTLM Hash Disclosure was discovered in ArchiMate Archi before 5.1.0. When parsing the XMLNS value of an ArchiMate project file, if the namespace does not match the expected ArchiMate URL, the parser will access the provided resource. If the provided resource is a UNC path pointing to a share server that does not accept a guest account, the host will try to authenticate on the share by using the current user's session. NOTE: this issue occurs because Archi uses an unsafe configuration of the Eclipse Modeling Framework.

## Which versions are affected by CVE-2023-40235?

It affects 1 product.


Products: Opengroup Archi.

## How do I fix CVE-2023-40235?

No fix has been published for CVE-2023-40235 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-40235 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-40235 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-40235 and fix it if it is affected.

What it is: CVE-2023-40235 is a medium-severity vulnerability in n/a, published on 10 Aug 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-40235 exists.

Affected product: n/a. 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-2023-40235/ (Markdown: https://insights.sbomify.com/CVE-2023-40235/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-40235
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-40235
- OSV: https://osv.dev/vulnerability/CVE-2023-40235

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-40235/
Summaries are generated and may contain mistakes; the official description above is the record.