# CVE-2022-47377: Auth bypass in SICK SIM2000ST (LFT PPC)

> Unprivileged remote attackers can bypass authentication via the password recovery mechanism to gain elevated privileges on SICK SIM2000ST devices.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Dec 2022
- **Updated:** 16 Apr 2025
- **Also known as:** GHSA-4hw9-gj93-w3gr

## What is CVE-2022-47377?

CVE-2022-47377 is a critical authentication bypass vulnerability in SICK SIM2000ST (LFT PPC), published on 16 Dec 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Password recovery vulnerability in SICK SIM2000ST Partnumber 2086502 with firmware version <1.13.4 allows an unprivileged remote attacker to gain access to the userlevel defined as RecoverableUserLevel by invocating the password recovery mechanism method. This leads to an increase in their privileges on the system and thereby affecting the confidentiality integrity and availability of the system. An attacker can expect repeatable success by exploiting the vulnerability. The recommended solution is to update the firmware to a version >= 1.13.4 as soon as possible (available in SICK Support Portal).

Weakness: CWE-640 (Weak Password Recovery Mechanism for Forgotten Password), CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2022-47377?

It affects 1 product.


Products: Sick Sim2000 Firmware.

## How do I fix CVE-2022-47377?

No fix has been published for CVE-2022-47377 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-47377 being exploited?

There is no known exploitation of CVE-2022-47377 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-47377 and fix it if it is affected.

What it is: CVE-2022-47377 is a critical authentication bypass vulnerability in SICK SIM2000ST (LFT PPC), published on 16 Dec 2022. 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-2022-47377 in the wild and no public exploit code.

Affected product: SICK SIM2000ST (LFT PPC). 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-2022-47377/ (Markdown: https://insights.sbomify.com/CVE-2022-47377/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-47377
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-47377
- OSV: https://osv.dev/vulnerability/CVE-2022-47377

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-47377/
Summaries are generated and may contain mistakes; the official description above is the record.