# CVE-2021-33491: Path traversal in n/a

> Attackers can read arbitrary files via directory traversal in OX App Suite using malicious ZIP archives and DNS records.

- **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:** 22 Nov 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-jcf7-7gj6-2qmr

## What is CVE-2021-33491?

CVE-2021-33491 is a medium-severity path traversal vulnerability in n/a, published on 22 Nov 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

OX App Suite through 7.10.5 allows Directory Traversal via ../ in an OOXML or ODF ZIP archive, because of the mishandling of relative paths in mail addresses in conjunction with auto-configuration DNS records.

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

## Which versions are affected by CVE-2021-33491?

It affects 1 product.


Products: Open-Xchange Ox App Suite.

## How do I fix CVE-2021-33491?

No fix has been published for CVE-2021-33491 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-33491 being exploited?

There is no known exploitation of CVE-2021-33491 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2022-29851](https://insights.sbomify.com/CVE-2022-29851/): Command injection in n/a (critical 9.8)
- [CVE-2022-23100](https://insights.sbomify.com/CVE-2022-23100/): Command injection in n/a (critical 9.8)
- [CVE-2022-24405](https://insights.sbomify.com/CVE-2022-24405/): Command injection in n/a (critical 9.8)
- [CVE-2023-29048](https://insights.sbomify.com/CVE-2023-29048/): Command injection in OX App Suite (high 8.8)
- [CVE-2023-29051](https://insights.sbomify.com/CVE-2023-29051/): Missing authorization in OX App Suite (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-33491 and fix it if it is affected.

What it is: CVE-2021-33491 is a medium-severity path traversal vulnerability in n/a, published on 22 Nov 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-2021-33491 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-2021-33491/ (Markdown: https://insights.sbomify.com/CVE-2021-33491/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-33491
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-33491
- OSV: https://osv.dev/vulnerability/CVE-2021-33491

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-33491/
Summaries are generated and may contain mistakes; the official description above is the record.