# CVE-2019-1805: Cisco Wireless LAN Controller Secure Shell Unauthorized Access Vulnerability

> An unauthenticated adjacent attacker can bypass SSH authentication to access the CLI of Cisco Wireless LAN Controllers, potentially enabling further attacks.

- **Severity:** Medium 5.4 (`CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`)
- **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:** 18 Apr 2019
- **Updated:** 21 Nov 2024
- **Also known as:** GHSA-mcf3-mmrq-wrhp

## What is CVE-2019-1805?

CVE-2019-1805 is a medium-severity authentication bypass vulnerability in Cisco Wireless Lan Controller Software, published on 18 Apr 2019. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability in certain access control mechanisms for the Secure Shell (SSH) server implementation for Cisco Wireless LAN Controller (WLC) Software could allow an unauthenticated, adjacent attacker to access a CLI instance on an affected device. The vulnerability is due to a lack of proper input- and validation-checking mechanisms for inbound SSH connections on an affected device. An attacker could exploit this vulnerability by attempting to establish an SSH connection to an affected controller. An exploit could allow the attacker to access an affected device's CLI to potentially cause further attacks. This vulnerability has been fixed in version 8.5(140.0).

Weakness: CWE-20 (Improper Input Validation), CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2019-1805?

It affects 1 product.


Products: Cisco Wireless Lan Controller Software.

## How do I fix CVE-2019-1805?

No fix has been published for CVE-2019-1805 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-1805 being exploited?

There is no known exploitation of CVE-2019-1805 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-2019-1805 and fix it if it is affected.

What it is: CVE-2019-1805 is a medium-severity authentication bypass vulnerability in Cisco Wireless Lan Controller Software, published on 18 Apr 2019. 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-2019-1805 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-2019-1805/ (Markdown: https://insights.sbomify.com/CVE-2019-1805/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-1805
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-1805
- OSV: https://osv.dev/vulnerability/CVE-2019-1805

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-1805/
Summaries are generated and may contain mistakes; the official description above is the record.