# CVE-2023-24023: Weak cryptography in n/a

> Man-in-the-middle attackers can force short Bluetooth encryption keys, potentially exposing keys and allowing live injection.

- **Severity:** Medium 6.4 (`CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 28 Nov 2023
- **Updated:** 2 Aug 2024
- **Also known as:** A-255601934, ASB-A-255601934, BELL-CVE-2023-24023, DEBIAN-CVE-2023-24023, GHSA-4rvq-6825-fp99, ROOT-OS-DEBIAN-11-CVE-2023-24023, UBUNTU-CVE-2023-24023

## What is CVE-2023-24023?

CVE-2023-24023 is a medium-severity vulnerability in Microsoft Windows 10 1809, published on 28 Nov 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Bluetooth BR/EDR devices with Secure Simple Pairing and Secure Connections pairing in Bluetooth Core Specification 4.2 through 5.4 allow certain man-in-the-middle attacks that force a short key length, and might lead to discovery of the encryption key and live injection, aka BLUFFS.

## Which versions are affected by CVE-2023-24023?

It affects 10 products.


Products: Bluetooth Bluetooth Core Specification, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 21h2, Microsoft Windows 11 22h2, Microsoft Windows 11 23h2, Microsoft Windows Server 2019, Microsoft Windows Server 2022, Microsoft Windows Server 2022 23h2.

## How do I fix CVE-2023-24023?

Apply the vendor's patch.

## Is CVE-2023-24023 being exploited?

There is no known exploitation of CVE-2023-24023 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Windows 10 1809

- [CVE-2022-25836](https://insights.sbomify.com/CVE-2022-25836/): Auth bypass in n/a (high 7.5)
- [CVE-2022-25837](https://insights.sbomify.com/CVE-2022-25837/): Auth bypass in n/a (high 7.5)
- [CVE-2020-26556](https://insights.sbomify.com/CVE-2020-26556/): Auth bypass in n/a (high 7.5)
- [CVE-2020-15802](https://insights.sbomify.com/CVE-2020-15802/): Auth bypass in n/a (medium 5.9)
- [CVE-2020-26555](https://insights.sbomify.com/CVE-2020-26555/): Auth bypass in n/a (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-24023 and fix it if it is affected.

What it is: CVE-2023-24023 is a medium-severity vulnerability in Microsoft Windows 10 1809, published on 28 Nov 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-24023 in the wild and no public exploit code.

Affected product: Microsoft Windows 10 1809. 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-2023-24023/ (Markdown: https://insights.sbomify.com/CVE-2023-24023/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-24023
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-24023
- OSV: https://osv.dev/vulnerability/CVE-2023-24023

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-24023/
Summaries are generated and may contain mistakes; the official description above is the record.