# CVE-2024-39808: Denial of service in Controller 6000 and Controller 7000

> An attacker with physical access to wiring can cause a reboot in Gallagher Controller 6000/7000 devices, resulting in a denial of service.

- **Severity:** Medium 4.6 (`CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Sep 2024
- **Updated:** 11 Sep 2024
- **Also known as:** GHSA-9qcw-x77v-9qjh

## What is CVE-2024-39808?

CVE-2024-39808 is a medium-severity denial of service vulnerability in Gallagher Controller 6000 and Controller 7000, published on 11 Sep 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Incorrect Calculation of Buffer Size (CWE-131) in the Controller 6000 and Controller 7000 OSDP message handling, allows an attacker with physical access to Controller wiring to instigate a reboot leading to a denial of service. 

This issue affects: Controller 6000 and Controller 7000 9.10 prior to vCR9.10.240816a (distributed in 9.10.1530 (MR2)), 9.00 prior to vCR9.00.240816a (distributed in 9.00.2168 (MR4)), 8.90 prior to vCR8.90.240816a (distributed in 8.90.2155 (MR5)), 8.80 prior to vCR8.80.240816b (distributed in 8.80.1938 (MR6)), all versions of 8.70 and prior.

Weakness: CWE-131 (Incorrect Calculation of Buffer Size)

## Which versions are affected by CVE-2024-39808?


## How do I fix CVE-2024-39808?

No fix has been published for CVE-2024-39808 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-39808 being exploited?

There is no known exploitation of CVE-2024-39808 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-39808 and fix it if it is affected.

What it is: CVE-2024-39808 is a medium-severity denial of service vulnerability in Gallagher Controller 6000 and Controller 7000, published on 11 Sep 2024. 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-2024-39808 in the wild and no public exploit code.

Affected product: Gallagher Controller 6000 and Controller 7000. 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-2024-39808/ (Markdown: https://insights.sbomify.com/CVE-2024-39808/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-39808
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-39808
- OSV: https://osv.dev/vulnerability/CVE-2024-39808

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-39808/
Summaries are generated and may contain mistakes; the official description above is the record.