# CVE-2022-21935: Metasys password guessing

> Attackers can bypass authentication to change passwords and take over accounts in Johnson Controls Metasys servers.

- **Severity:** High 7.5 (`CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/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:** 15 Jun 2022
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-77fh-mgrj-x7vc

## What is CVE-2022-21935?

CVE-2022-21935 is a high-severity authentication bypass vulnerability in Johnson Controls Metasys ADS/ADX/OAS server, published on 15 Jun 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability in Metasys ADS/ADX/OAS 10 versions prior to 10.1.5 and Metasys ADS/ADX/OAS 11 versions prior to 11.0.2 allows unverified password change.

Weakness: CWE-287 (Improper Authentication), CWE-620 (Unverified Password Change)

## Which versions are affected by CVE-2022-21935?

It affects 3 products.


Products: Johnsoncontrols Metasys Application and Data Server, Johnsoncontrols Metasys Extended Application and Data Server, Johnsoncontrols Metasys Open Application Server.

## How do I fix CVE-2022-21935?

No fix has been published for CVE-2022-21935 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-21935 being exploited?

There is no known exploitation of CVE-2022-21935 in the wild and no public exploit code.

## Other vulnerabilities in Johnson Controls Metasys ADS/ADX/OAS server

- [CVE-2021-36207](https://insights.sbomify.com/CVE-2021-36207/): Metasys privilege management (high 8.8)
- [CVE-2022-21937](https://insights.sbomify.com/CVE-2022-21937/): Metasys CSS (high 8.7)
- [CVE-2021-36202](https://insights.sbomify.com/CVE-2021-36202/): Metasys UI (high 8.4)
- [CVE-2022-21938](https://insights.sbomify.com/CVE-2022-21938/): Metasys MUI Graphics XSS (high 8.1)
- [CVE-2021-36205](https://insights.sbomify.com/CVE-2021-36205/): Metasys session token (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-21935 and fix it if it is affected.

What it is: CVE-2022-21935 is a high-severity authentication bypass vulnerability in Johnson Controls Metasys ADS/ADX/OAS server, published on 15 Jun 2022. 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-2022-21935 in the wild and no public exploit code.

Affected product: Johnson Controls Metasys ADS/ADX/OAS server. 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-2022-21935/ (Markdown: https://insights.sbomify.com/CVE-2022-21935/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-21935
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-21935
- OSV: https://osv.dev/vulnerability/CVE-2022-21935

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From sbomify Insights: https://insights.sbomify.com/CVE-2022-21935/
Summaries are generated and may contain mistakes; the official description above is the record.