# CVE-2021-41579: Path traversal in n/a

> Attackers can bypass consent popups and write arbitrary files via malicious project files, leading to code execution in LAquis SCADA.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 4 Oct 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-q78c-pv4h-fqw6

## What is CVE-2021-41579?

CVE-2021-41579 is a high-severity path traversal vulnerability in n/a, published on 4 Oct 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

LCDS LAquis SCADA through 4.3.1.1085 is vulnerable to a control bypass and path traversal. If an attacker can get a victim to load a malicious els project file and use the play feature, then the attacker can bypass a consent popup and write arbitrary files to OS locations where the user has permission, leading to code execution.

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

## Which versions are affected by CVE-2021-41579?

It affects 1 product.


Products: Laquisscada Scada.

## How do I fix CVE-2021-41579?

No fix has been published for CVE-2021-41579 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-41579 being exploited?

There is no known exploitation of CVE-2021-41579 in the wild and no public exploit code.

Public exploit code:

- https://github.com/mbanyamer/CVE-2021-41579-LCDS-LAquis-SCADA-4.3.1.1085-Arbitrary-File-Write (github_poc): https://github.com/mbanyamer/CVE-2021-41579-LCDS-LAquis-SCADA-4.3.1.1085-Arbitrary-File-Write

## Other vulnerabilities in n/a

- [CVE-2020-25188](https://insights.sbomify.com/CVE-2020-25188/): Memory corruption in LAquis SCADA (high 7.8)
- [CVE-2019-10980](https://insights.sbomify.com/CVE-2019-10980/): Memory corruption in LCDS LAquis SCADA (high 7.8)
- [CVE-2019-10994](https://insights.sbomify.com/CVE-2019-10994/): Information disclosure in LCDS LAquis SCADA (low 3.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-41579 and fix it if it is affected.

What it is: CVE-2021-41579 is a high-severity path traversal vulnerability in n/a, published on 4 Oct 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-41579 in the wild and no public exploit code.

Affected product: n/a. 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-2021-41579/ (Markdown: https://insights.sbomify.com/CVE-2021-41579/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-41579
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-41579
- OSV: https://osv.dev/vulnerability/CVE-2021-41579

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-41579/
Summaries are generated and may contain mistakes; the official description above is the record.