# CVE-2018-0248: Cisco Wireless LAN Controller Software GUI Configuration Denial of Service Vulnerabilities

> Authenticated attackers can cause Cisco Wireless LAN Controllers to reload unexpectedly via crafted GUI input, resulting in a denial of service.

- **Severity:** Medium 6.8 (`CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Apr 2019
- **Updated:** 21 Nov 2024
- **Also known as:** GHSA-9qwv-6vp9-5hpm

## What is CVE-2018-0248?

CVE-2018-0248 is a medium-severity denial of service vulnerability in Cisco Wireless Lan Controller Software, published on 17 Apr 2019. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A vulnerability in the administrative GUI configuration feature of Cisco Wireless LAN Controller (WLC) Software could allow an aUTHENTICated, remote attacker to cause the device to reload unexpectedly during device configuration when the administrator is using this GUI, causing a denial of service (DoS) condition on an affected device. The attacker would need to have valid administrator credentials on the device. This vulnerability is due to incomplete input validation for unexpected configuration options that the attacker could submit while accessing the GUI configuration menus. An attacker could exploit these vulnerabilities by authenticating to the device and submitting crafted user input when using the administrative GUI configuration feature. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. Software versions prior to 8.3.150.0, 8.5.140.0, 8.8.111.0 are affected by this vulnerability.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2018-0248?

It affects 1 product.


Products: Cisco Wireless Lan Controller Software.

## How do I fix CVE-2018-0248?

No fix has been published for CVE-2018-0248 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-0248 being exploited?

There is no known exploitation of CVE-2018-0248 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-2018-0248 and fix it if it is affected.

What it is: CVE-2018-0248 is a medium-severity denial of service vulnerability in Cisco Wireless Lan Controller Software, published on 17 Apr 2019. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-0248 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-2018-0248/ (Markdown: https://insights.sbomify.com/CVE-2018-0248/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-0248
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-0248
- OSV: https://osv.dev/vulnerability/CVE-2018-0248

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-0248/
Summaries are generated and may contain mistakes; the official description above is the record.