# CVE-2023-1768: Symmetric agent data encryption fails silently

> Attackers can read sensitive agent data in plaintext due to silent encryption failures in specific Checkmk configurations.

- **Severity:** Low 3.7 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Apr 2023
- **Updated:** 11 Feb 2025
- **Also known as:** GHSA-72mw-x5mh-hqfp, UBUNTU-CVE-2023-1768

## What is CVE-2023-1768?

CVE-2023-1768 is a low-severity vulnerability in Checkmk Checkmk, published on 4 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Inappropriate error handling in Tribe29 Checkmk <= 2.1.0p25, <= 2.0.0p34, <= 2.2.0b3 (beta), and all versions of Checkmk 1.6.0 causes the symmetric encryption of agent data to fail silently and transmit the data in plaintext in certain configurations.

Weakness: CWE-446 (UI Discrepancy for Security Feature)

## Which versions are affected by CVE-2023-1768?

It affects 2 products.


Products: Checkmk Checkmk, Tribe29 Checkmk.

## How do I fix CVE-2023-1768?

No fix has been published for CVE-2023-1768 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-1768 being exploited?

There is no known exploitation of CVE-2023-1768 in the wild and no public exploit code.

## Other vulnerabilities in Checkmk Checkmk

- [CVE-2025-39666](https://insights.sbomify.com/CVE-2025-39666/): omd: Local privilege escalation when executing omd commands as root (critical 9.3)
- [CVE-2024-8606](https://insights.sbomify.com/CVE-2024-8606/): Fix 2FA bypass via RestAPI (critical 9.2)
- [CVE-2022-46836](https://insights.sbomify.com/CVE-2022-46836/): PHP code injection in watolib (critical 9.1)
- [CVE-2025-32919](https://insights.sbomify.com/CVE-2025-32919/): Privilege Escalation in Windows License plugin for Checkmk Windows Agent (high 8.8)
- [CVE-2024-28827](https://insights.sbomify.com/CVE-2024-28827/): Privilege escalation in Windows agent (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-1768 and fix it if it is affected.

What it is: CVE-2023-1768 is a low-severity vulnerability in Checkmk Checkmk, published on 4 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-1768 in the wild and no public exploit code.

Affected product: Checkmk Checkmk. 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-2023-1768/ (Markdown: https://insights.sbomify.com/CVE-2023-1768/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-1768
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-1768
- OSV: https://osv.dev/vulnerability/CVE-2023-1768

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-1768/
Summaries are generated and may contain mistakes; the official description above is the record.