# CVE-2019-3910: Auth bypass in Crestron AM-100 Before 1.6.0.2

> Unauthenticated attackers can bypass authentication to access administrator functions like configuring updates and rebooting the device.

- **Severity:** Critical 9.1 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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:** 18 Jan 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-vpcf-99rm-ghcj

## What is CVE-2019-3910?

CVE-2019-3910 is a critical authentication bypass vulnerability in Crestron AM-100 Before 1.6.0.2, published on 18 Jan 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Crestron AM-100 before firmware version 1.6.0.2 contains an authentication bypass in the web interface's return.cgi script. Unauthenticated remote users can use the bypass to access some administrator functionality such as configuring update sources and rebooting the device.

## Which versions are affected by CVE-2019-3910?

It affects 1 product.


Products: Crestron Airmedia Am-100 Firmware.

## How do I fix CVE-2019-3910?

No fix has been published for CVE-2019-3910 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-3910 being exploited?

There is no known exploitation of CVE-2019-3910 in the wild and no public exploit code.

## Other vulnerabilities in Crestron AM-100 Before 1.6.0.2

- [CVE-2016-5640](https://insights.sbomify.com/CVE-2016-5640/): Command injection in n/a (critical 9.8)
- [CVE-2016-5639](https://insights.sbomify.com/CVE-2016-5639/): Path traversal in n/a (high 7.5)
- [CVE-2017-16709](https://insights.sbomify.com/CVE-2017-16709/): Code injection in n/a (high 7.2)
- [CVE-2017-16710](https://insights.sbomify.com/CVE-2017-16710/): Cross-site scripting in n/a (medium 4.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-3910 and fix it if it is affected.

What it is: CVE-2019-3910 is a critical authentication bypass vulnerability in Crestron AM-100 Before 1.6.0.2, published on 18 Jan 2019. 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-2019-3910 in the wild and no public exploit code.

Affected product: Crestron AM-100 Before 1.6.0.2. 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-2019-3910/ (Markdown: https://insights.sbomify.com/CVE-2019-3910/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-3910
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-3910
- OSV: https://osv.dev/vulnerability/CVE-2019-3910

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-3910/
Summaries are generated and may contain mistakes; the official description above is the record.