# CVE-2022-24403: De-anonymization attack in TETRA

> Weakness in TETRA identity encryption allows attackers to recover keys and de-anonymize users using known identity pairs.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:F/RL:U/RC:C/CR:H/IR:H/AR:H/MAV:A/MAC:L/MPR:N/MUI:N/MS:U/MC:L/MI:N/MA:N`)
- **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:** 5 Dec 2023
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-pm5f-h2hr-89qr

## What is CVE-2022-24403?

CVE-2022-24403 is a medium-severity vulnerability in ETSI TETRA Standard, published on 5 Dec 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The TETRA TA61 identity encryption function internally uses a 64-bit value derived exclusively from the SCK (Class 2 networks) or CCK (Class 3 networks). The structure of TA61 allows for efficient recovery of this 64-bit value, allowing an adversary to encrypt or decrypt arbitrary identities given only three known encrypted/unencrypted identity pairs.

Weakness: CWE-327 (Use of a Broken or Risky Cryptographic Algorithm)

## Which versions are affected by CVE-2022-24403?

It affects 1 product.


Products: Midnightblue Tetra\.

## How do I fix CVE-2022-24403?

No fix has been published for CVE-2022-24403 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-24403 being exploited?

There is no known exploitation of CVE-2022-24403 in the wild and no public exploit code.

## Other vulnerabilities in ETSI TETRA Standard

- [CVE-2022-24401](https://insights.sbomify.com/CVE-2022-24401/): Keystream recovery for arbitrary frames in TETRA (high 8.8)
- [CVE-2022-24402](https://insights.sbomify.com/CVE-2022-24402/): Intentionally weakened effective strength in TETRA TEA1 (high 8.8)
- [CVE-2022-24400](https://insights.sbomify.com/CVE-2022-24400/): DCK pinning attack in TETRA (high 7.5)
- [CVE-2022-24404](https://insights.sbomify.com/CVE-2022-24404/): Ciphertext Malleability in TETRA (medium 5.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-24403 and fix it if it is affected.

What it is: CVE-2022-24403 is a medium-severity vulnerability in ETSI TETRA Standard, published on 5 Dec 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-2022-24403 in the wild and no public exploit code.

Affected product: ETSI TETRA Standard. 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-2022-24403/ (Markdown: https://insights.sbomify.com/CVE-2022-24403/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-24403
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-24403
- OSV: https://osv.dev/vulnerability/CVE-2022-24403

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-24403/
Summaries are generated and may contain mistakes; the official description above is the record.