# CVE-2019-1848: Cisco DNA Center Authentication Bypass Vulnerability

> An unauthenticated adjacent attacker can bypass authentication to access critical internal services by connecting to the cluster services subnet.

- **Severity:** Critical 9.3 (`CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/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:** 20 Jun 2019
- **Updated:** 20 Nov 2024
- **Also known as:** GHSA-72v5-4c4w-2chj

## What is CVE-2019-1848?

CVE-2019-1848 is a critical authentication bypass vulnerability in Cisco Digital Network Architecture Center (DNA Center), published on 20 Jun 2019. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability in Cisco Digital Network Architecture (DNA) Center could allow an unauthenticated, adjacent attacker to bypass authentication and access critical internal services. The vulnerability is due to insufficient access restriction to ports necessary for system operation. An attacker could exploit this vulnerability by connecting an unauthorized network device to the subnet designated for cluster services. A successful exploit could allow an attacker to reach internal services that are not hardened for external access.

Weakness: CWE-668 (Exposure of Resource to Wrong Sphere)

## Which versions are affected by CVE-2019-1848?

It affects 1 product.


Products: Cisco Digital Network Architecture Center.

## How do I fix CVE-2019-1848?

No fix has been published for CVE-2019-1848 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-1848 being exploited?

There is no known exploitation of CVE-2019-1848 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Digital Network Architecture Center (DNA Center)

- [CVE-2018-0222](https://insights.sbomify.com/CVE-2018-0222/): Hardcoded credentials in Cisco Digital Network Architecture Center (critical 10.0)
- [CVE-2018-0268](https://insights.sbomify.com/CVE-2018-0268/): Misconfiguration in Cisco Digital Network Architecture Center (critical 10.0)
- [CVE-2018-0448](https://insights.sbomify.com/CVE-2018-0448/): Cisco Digital Network Architecture Center Authentication Bypass Vulnerability (critical 9.8)
- [CVE-2018-15386](https://insights.sbomify.com/CVE-2018-15386/): Cisco Digital Network Architecture Center Unauthenticated Access Vulnerability (critical 9.8)
- [CVE-2018-0271](https://insights.sbomify.com/CVE-2018-0271/): Auth bypass in Cisco Digital Network Architecture Center (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-1848 and fix it if it is affected.

What it is: CVE-2019-1848 is a critical authentication bypass vulnerability in Cisco Digital Network Architecture Center (DNA Center), published on 20 Jun 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-2019-1848 in the wild and no public exploit code.

Affected product: Cisco Digital Network Architecture Center (DNA Center). 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-2019-1848/ (Markdown: https://insights.sbomify.com/CVE-2019-1848/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-1848
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-1848
- OSV: https://osv.dev/vulnerability/CVE-2019-1848

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-1848/
Summaries are generated and may contain mistakes; the official description above is the record.