# CVE-2019-5635: Hickory Smart Lock Cleartext Password

> Attackers can intercept cleartext MQTT traffic to steal default credentials, enabling unauthorized access to the smart lock bridge.

- **Severity:** Medium 6.5 (`CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Aug 2019
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-7xw3-q96c-r8hm

## What is CVE-2019-5635?

CVE-2019-5635 is a medium-severity vulnerability in Belwith Products, LLC Hickory Smart Ethernet Bridge, published on 22 Aug 2019. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A cleartext transmission of sensitive information vulnerability is present in Hickory Smart Ethernet Bridge from Belwith Products, LLC. Captured data reveals that the Hickory Smart Ethernet Bridge device communicates over the network to an MQTT broker without using encryption. This exposed the default username and password used to authenticate to the MQTT broker. This issue affects Hickory Smart Ethernet Bridge, model number H077646. The firmware does not appear to contain versioning information.

Weakness: CWE-319 (Cleartext Transmission of Sensitive Information)

## Which versions are affected by CVE-2019-5635?

It affects 1 product.


Products: Belwith-Keeler Hickory Smart Ethernet Bridge Firmware.

## How do I fix CVE-2019-5635?

No fix has been published for CVE-2019-5635 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-5635 being exploited?

There is no known exploitation of CVE-2019-5635 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-5635 and fix it if it is affected.

What it is: CVE-2019-5635 is a medium-severity vulnerability in Belwith Products, LLC Hickory Smart Ethernet Bridge, published on 22 Aug 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-5635 in the wild and no public exploit code.

Affected product: Belwith Products, LLC Hickory Smart Ethernet Bridge. 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-2019-5635/ (Markdown: https://insights.sbomify.com/CVE-2019-5635/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-5635
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-5635
- OSV: https://osv.dev/vulnerability/CVE-2019-5635

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-5635/
Summaries are generated and may contain mistakes; the official description above is the record.