# CVE-2018-0249: A vulnerability when handling incoming 802.11 Association Requests for Cisco Aironet 1800 Series Access Point (APs) on Qualcomm Atheros (QCA


- **Severity:** Medium 4.3 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 2 May 2018
- **Updated:** 29 Nov 2024
- **Also known as:** GHSA-wwhv-grrm-9cfg

## What is CVE-2018-0249?

CVE-2018-0249 is a medium-severity vulnerability in Cisco Aironet 1800 Series Access Point, published on 2 May 2018. 

### Official description

A vulnerability when handling incoming 802.11 Association Requests for Cisco Aironet 1800 Series Access Point (APs) on Qualcomm Atheros (QCA) based hardware platforms could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected system. A successful exploit could prevent new clients from joining the AP. The vulnerability is due to incorrect handling of malformed or invalid 802.11 Association Requests. An attacker could exploit this vulnerability by sending a malformed stream of 802.11 Association Requests to the local interface of the targeted device. A successful exploit could allow the attacker to cause a DoS situation on an affected system, causing new client 802.11 Association Requests to fail. This vulnerability affects the following Cisco products: Aironet 1560 Series Access Points, Aironet 1810 Series OfficeExtend Access Points, Aironet 1810w Series Access Points, Aironet 1815 Series Access Points, Aironet 1830 Series Access Points, Aironet 1850 Series Access Points, Aironet 2800 Series Access Points, Aironet 3800 Series Access Points. Cisco Bug IDs: CSCvg02116.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2018-0249?

It affects 1 product.


Products: Cisco Aironet Access Point Software.

## How do I fix CVE-2018-0249?

No fix has been published for CVE-2018-0249 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-0249 being exploited?

There is no known exploitation of CVE-2018-0249 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Aironet 1800 Series Access Point

- [CVE-2017-3831](https://insights.sbomify.com/CVE-2017-3831/): Auth bypass in Cisco Mobility Express 1800 Access Point Series (critical 9.8)
- [CVE-2022-20622](https://insights.sbomify.com/CVE-2022-20622/): Cisco Embedded Wireless Controller with Catalyst Access Points IP Flood Denial of Service Vulnerability (high 8.6)
- [CVE-2018-0234](https://insights.sbomify.com/CVE-2018-0234/): Denial of service in Cisco Aironet 1810, 1830, and 1850 Series Access Points (high 8.6)
- [CVE-2016-1419](https://insights.sbomify.com/CVE-2016-1419/): Denial of service in n/a (high 8.1)
- [CVE-2016-6362](https://insights.sbomify.com/CVE-2016-6362/): Privilege escalation in n/a (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-0249 and fix it if it is affected.

What it is: CVE-2018-0249 is a medium-severity vulnerability in Cisco Aironet 1800 Series Access Point, published on 2 May 2018. 
Exploitation: There is no known exploitation of CVE-2018-0249 in the wild and no public exploit code.

Affected product: Cisco Aironet 1800 Series Access Point. 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-2018-0249/ (Markdown: https://insights.sbomify.com/CVE-2018-0249/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-0249
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-0249
- OSV: https://osv.dev/vulnerability/CVE-2018-0249

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-0249/
Summaries are generated and may contain mistakes; the official description above is the record.