# CVE-2017-7928: Missing authorization in Schweitzer Engineering Laboratories, Inc. SEL-3620 and SEL-3622

> Improper access control in SEL Security Gateways allows unauthorized communications to downstream devices when NAT port forwarding is configured.

- **Severity:** Critical 10.0 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Aug 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-g89g-4g7j-cgmm

## What is CVE-2017-7928?

CVE-2017-7928 is a critical missing authorization vulnerability in Schweitzer Engineering Laboratories, Inc. SEL-3620 and SEL-3622, published on 7 Aug 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An Improper Access Control issue was discovered in Schweitzer Engineering Laboratories (SEL) SEL-3620 and SEL-3622 Security Gateway Versions R202 and, R203, R203-V1, R203-V2 and, R204, R204-V1. The device does not properly enforce access control while configured for NAT port forwarding, which may allow for unauthorized communications to downstream devices.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2017-7928?

It affects 2 products.


Products: Selinc Sel-3620 Firmware, Selinc Sel-3622 Firmware.

## How do I fix CVE-2017-7928?

No fix has been published for CVE-2017-7928 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-7928 being exploited?

There is no known exploitation of CVE-2017-7928 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-7928 and fix it if it is affected.

What it is: CVE-2017-7928 is a critical missing authorization vulnerability in Schweitzer Engineering Laboratories, Inc. SEL-3620 and SEL-3622, published on 7 Aug 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2017-7928 in the wild and no public exploit code.

Affected product: Schweitzer Engineering Laboratories, Inc. SEL-3620 and SEL-3622. 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-2017-7928/ (Markdown: https://insights.sbomify.com/CVE-2017-7928/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-7928
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-7928
- OSV: https://osv.dev/vulnerability/CVE-2017-7928

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-7928/
Summaries are generated and may contain mistakes; the official description above is the record.