# CVE-2018-0235: A vulnerability in the 802.11 frame validation functionality of the Cisco Wireless LAN Controller (WLC) could allow an unauthenticated, adja


- **Severity:** High 7.4 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 2 May 2018
- **Updated:** 29 Nov 2024
- **Also known as:** GHSA-3m6w-w2q4-82mc

## What is CVE-2018-0235?

CVE-2018-0235 is a high-severity vulnerability in Cisco Wireless Lan Controller Software, published on 2 May 2018. 

### Official description

A vulnerability in the 802.11 frame validation functionality of the Cisco Wireless LAN Controller (WLC) could allow an unauthenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to incomplete input validation of certain 802.11 management information element frames that an affected device receives from wireless clients. An attacker could exploit this vulnerability by sending a malformed 802.11 management frame to an affected device. A successful exploit could allow the attacker to cause the affected device to reload unexpectedly, resulting in a DoS condition. This vulnerability affects only Cisco Wireless LAN Controllers that are running Cisco Mobility Express Release 8.5.103.0. Cisco Bug IDs: CSCvg07024.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2018-0235?

It affects 1 product.


Products: Cisco Wireless Lan Controller Software.

## How do I fix CVE-2018-0235?

No fix has been published for CVE-2018-0235 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-0235 being exploited?

There is no known exploitation of CVE-2018-0235 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Wireless Lan Controller Software

- [CVE-2007-2036](https://insights.sbomify.com/CVE-2007-2036/): Hardcoded credentials in n/a (critical 10.0)
- [CVE-2016-1363](https://insights.sbomify.com/CVE-2016-1363/): Memory corruption in n/a (critical 9.8)
- [CVE-2015-6314](https://insights.sbomify.com/CVE-2015-6314/): Auth bypass in n/a (critical 9.8)
- [CVE-2010-2842](https://insights.sbomify.com/CVE-2010-2842/): Privilege escalation in n/a (critical 9.0)
- [CVE-2010-2843](https://insights.sbomify.com/CVE-2010-2843/): Privilege escalation in n/a (critical 9.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-0235 and fix it if it is affected.

What it is: CVE-2018-0235 is a high-severity vulnerability in Cisco Wireless Lan Controller Software, published on 2 May 2018. 
Exploitation: There is no known exploitation of CVE-2018-0235 in the wild and no public exploit code.

Affected product: Cisco Wireless Lan Controller Software. 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-2018-0235/ (Markdown: https://insights.sbomify.com/CVE-2018-0235/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-0235
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-0235
- OSV: https://osv.dev/vulnerability/CVE-2018-0235

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-0235/
Summaries are generated and may contain mistakes; the official description above is the record.