# CVE-2021-37196: Path traversal in COMOS V10.2

> An attacker can exploit path traversal in COMOS Web to store files in arbitrary folders accessible by the webservice.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N`)
- **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:** 11 Jan 2022
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-mjj9-wv6r-p28g

## What is CVE-2021-37196?

CVE-2021-37196 is a medium-severity path traversal vulnerability in Siemens COMOS V10.2, published on 11 Jan 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability has been identified in COMOS V10.2 (All versions only if web components are used), COMOS V10.3 (All versions < V10.3.3.3 only if web components are used), COMOS V10.3 (All versions >= V10.3.3.3 only if web components are used), COMOS V10.4 (All versions < V10.4.1 only if web components are used). The COMOS Web component of COMOS unpacks specially crafted archive files to relative paths. This vulnerability could allow an attacker to store files in any folder accessible by the COMOS Web webservice.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory), CWE-23 (Relative Path Traversal)

## Which versions are affected by CVE-2021-37196?

It affects 1 product.


Products: Siemens Comos.

## How do I fix CVE-2021-37196?

No fix has been published for CVE-2021-37196 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-37196 being exploited?

There is no known exploitation of CVE-2021-37196 in the wild and no public exploit code.

## Other vulnerabilities in Siemens COMOS V10.2

- [CVE-2023-24482](https://insights.sbomify.com/CVE-2023-24482/): Memory corruption in COMOS V10.2 (critical 10.0)
- [CVE-2023-43504](https://insights.sbomify.com/CVE-2023-43504/): Memory corruption in COMOS (critical 9.6)
- [CVE-2023-43505](https://insights.sbomify.com/CVE-2023-43505/): Missing authorization in COMOS (critical 9.6)
- [CVE-2023-46601](https://insights.sbomify.com/CVE-2023-46601/): Missing authorization in COMOS (critical 9.6)
- [CVE-2021-37197](https://insights.sbomify.com/CVE-2021-37197/): SQL injection in COMOS V10.2 (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-37196 and fix it if it is affected.

What it is: CVE-2021-37196 is a medium-severity path traversal vulnerability in Siemens COMOS V10.2, published on 11 Jan 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-37196 in the wild and no public exploit code.

Affected product: Siemens COMOS V10.2. 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-2021-37196/ (Markdown: https://insights.sbomify.com/CVE-2021-37196/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-37196
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-37196
- OSV: https://osv.dev/vulnerability/CVE-2021-37196

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-37196/
Summaries are generated and may contain mistakes; the official description above is the record.