# CVE-2021-22717: Path traversal in C-Bus Toolkit V1.15.7 and prior

> A path traversal vulnerability in C-Bus Toolkit allows remote code execution when processing configuration files.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Apr 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-gh4c-gjxj-xr56

## What is CVE-2021-22717?

CVE-2021-22717 is a high-severity path traversal vulnerability in C-Bus Toolkit V1.15.7 and prior, published on 13 Apr 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability exists in C-Bus Toolkit (V1.15.7 and prior) that could allow a remote code execution when processing config files.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2021-22717?

It affects 1 product.


Products: Schneider-Electric C-Bus Toolkit.

## How do I fix CVE-2021-22717?

No fix has been published for CVE-2021-22717 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-22717 being exploited?

There is no known exploitation of CVE-2021-22717 in the wild and no public exploit code.

## Other vulnerabilities in C-Bus Toolkit V1.15.7 and prior

- [CVE-2023-5402](https://insights.sbomify.com/CVE-2023-5402/): Privilege escalation in C-Bus Toolkit (critical 9.8)
- [CVE-2021-22748](https://insights.sbomify.com/CVE-2021-22748/): Path traversal in C-Bus Toolkit (V1.15.9 and prior), C-Gate Server (V2.11.7 and prior) (high 8.8)
- [CVE-2021-22719](https://insights.sbomify.com/CVE-2021-22719/): Path traversal in C-Bus Toolkit V1.15.7 and prior (high 8.8)
- [CVE-2021-22716](https://insights.sbomify.com/CVE-2021-22716/): Privilege escalation in C-Bus Toolkit (high 7.8)
- [CVE-2021-22718](https://insights.sbomify.com/CVE-2021-22718/): Path traversal in C-Bus Toolkit V1.15.7 and prior (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-22717 and fix it if it is affected.

What it is: CVE-2021-22717 is a high-severity path traversal vulnerability in C-Bus Toolkit V1.15.7 and prior, published on 13 Apr 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-22717 in the wild and no public exploit code.

Affected product: C-Bus Toolkit V1.15.7 and prior. 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-2021-22717/ (Markdown: https://insights.sbomify.com/CVE-2021-22717/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-22717
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-22717
- OSV: https://osv.dev/vulnerability/CVE-2021-22717

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-22717/
Summaries are generated and may contain mistakes; the official description above is the record.