# CVE-2017-12093: Denial of service in Allen Bradley

> An attacker can disconnect legitimate PLC connections by flooding the session resource pool with crafted packets, impacting industrial control operations.

- **Severity:** Medium 5.3 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Apr 2018
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-6xvm-9875-gvqp

## What is CVE-2017-12093?

CVE-2017-12093 is a medium-severity denial of service vulnerability in Talos Allen Bradley, published on 5 Apr 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An exploitable insufficient resource pool vulnerability exists in the session communication functionality of Allen Bradley Micrologix 1400 Series B Firmware 21.2 and before. A specially crafted stream of packets can cause a flood of the session resource pool resulting in legitimate connections to the PLC being disconnected. An attacker can send unauthenticated packets to trigger this vulnerability.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2017-12093?

It affects 1 product.


Products: Rockwellautomation Micrologix 1400 B Firmware.

## How do I fix CVE-2017-12093?

No fix has been published for CVE-2017-12093 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-12093 being exploited?

There is no known exploitation of CVE-2017-12093 in the wild and no public exploit code.

## Other vulnerabilities in Talos Allen Bradley

- [CVE-2017-14462](https://insights.sbomify.com/CVE-2017-14462/): Missing authorization in Allen Bradley (critical 10.0)
- [CVE-2017-14463](https://insights.sbomify.com/CVE-2017-14463/): Missing authorization in Allen Bradley (critical 10.0)
- [CVE-2017-14464](https://insights.sbomify.com/CVE-2017-14464/): Missing authorization in Allen Bradley (critical 10.0)
- [CVE-2017-14465](https://insights.sbomify.com/CVE-2017-14465/): Missing authorization in Allen Bradley (critical 10.0)
- [CVE-2017-14466](https://insights.sbomify.com/CVE-2017-14466/): Missing authorization in Allen Bradley (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-12093 and fix it if it is affected.

What it is: CVE-2017-12093 is a medium-severity denial of service vulnerability in Talos Allen Bradley, published on 5 Apr 2018. 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-2017-12093 in the wild and no public exploit code.

Affected product: Talos Allen Bradley. 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-2017-12093/ (Markdown: https://insights.sbomify.com/CVE-2017-12093/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-12093
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-12093
- OSV: https://osv.dev/vulnerability/CVE-2017-12093

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-12093/
Summaries are generated and may contain mistakes; the official description above is the record.