# CVE-2020-29026: Path traversal in GateManager

> Authenticated administrators can read and write arbitrary files via directory traversal in GateManager, requiring an upgrade to version 9.2c.

- **Severity:** Critical 9.0 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Feb 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-2m67-gph7-q4xp

## What is CVE-2020-29026?

CVE-2020-29026 is a critical path traversal vulnerability in Secomea GateManager, published on 15 Feb 2021. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A directory traversal vulnerability exists in the file upload function of the GateManager that allows an authenticated attacker with administrative permissions to read and write arbitrary files in the Linux file system. This issue affects: GateManager all versions prior to 9.2c.

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

## Which versions are affected by CVE-2020-29026?

It affects 4 products.


Products: Secomea Gatemanager 4250 Firmware, Secomea Gatemanager 4260 Firmware, Secomea Gatemanager 8250 Firmware, Secomea Gatemanager 9250 Firmware.

## How do I fix CVE-2020-29026?

No fix has been published for CVE-2020-29026 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-29026 being exploited?

There is no known exploitation of CVE-2020-29026 in the wild and no public exploit code.

## Other vulnerabilities in Secomea GateManager

- [CVE-2022-25787](https://insights.sbomify.com/CVE-2022-25787/): GTA URLs issued by LMM WEB API may leak information (high 7.5)
- [CVE-2020-29031](https://insights.sbomify.com/CVE-2020-29031/): Insecure Direct Object Reference in GateManager WebUI can cause privilege escalation (high 7.1)
- [CVE-2021-32010](https://insights.sbomify.com/CVE-2021-32010/): Clients may connect to a GateManager with TLS 1.0 (medium 5.6)
- [CVE-2022-25782](https://insights.sbomify.com/CVE-2022-25782/): Insufficient privilege checks on object access and updates. (medium 5.4)
- [CVE-2020-29022](https://insights.sbomify.com/CVE-2020-29022/): Host Header Injection allowing web cache poisoning attacks (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-29026 and fix it if it is affected.

What it is: CVE-2020-29026 is a critical path traversal vulnerability in Secomea GateManager, published on 15 Feb 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-29026 in the wild and no public exploit code.

Affected product: Secomea GateManager. 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-2020-29026/ (Markdown: https://insights.sbomify.com/CVE-2020-29026/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-29026
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-29026
- OSV: https://osv.dev/vulnerability/CVE-2020-29026

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-29026/
Summaries are generated and may contain mistakes; the official description above is the record.