# CVE-2019-1647: Cisco SD-WAN Solution Unauthorized Access Vulnerability

> An authenticated adjacent attacker can bypass authentication to access other vSmart containers and modify critical system files due to insecure default configuration.

- **Severity:** High 8.0 (`CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Jan 2019
- **Updated:** 20 Nov 2024
- **Also known as:** GHSA-hgf8-22gv-6hjf

## What is CVE-2019-1647?

CVE-2019-1647 is a high-severity authentication bypass vulnerability in Cisco SD-WAN Solution, published on 24 Jan 2019. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability in the Cisco SD-WAN Solution could allow an authenticated, adjacent attacker to bypass authentication and have direct unauthorized access to other vSmart containers. The vulnerability is due to an insecure default configuration of the affected system. An attacker could exploit this vulnerability by directly connecting to the exposed services. An exploit could allow the attacker to retrieve and modify critical system files.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2019-1647?

It affects 2 products.


Products: Cisco Sd-Wan, Cisco Vsmart Controller.

## How do I fix CVE-2019-1647?

No fix has been published for CVE-2019-1647 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-1647 being exploited?

There is no known exploitation of CVE-2019-1647 in the wild and no public exploit code.

## Other vulnerabilities in Cisco SD-WAN Solution

- [CVE-2020-3374](https://insights.sbomify.com/CVE-2020-3374/): Cisco SD-WAN vManage Software Authorization Bypass Vulnerability (critical 9.9)
- [CVE-2018-15387](https://insights.sbomify.com/CVE-2018-15387/): Cisco SD-WAN Solution Certificate Validation Bypass Vulnerability (critical 9.8)
- [CVE-2019-1624](https://insights.sbomify.com/CVE-2019-1624/): Cisco SD-WAN Solution Command Injection Vulnerability (high 8.8)
- [CVE-2019-1650](https://insights.sbomify.com/CVE-2019-1650/): Cisco SD-WAN Solution Arbitrary File Overwrite Vulnerability (high 8.8)
- [CVE-2020-3180](https://insights.sbomify.com/CVE-2020-3180/): Cisco SD-WAN Solution Software Static Credentials Vulnerability (high 8.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-1647 and fix it if it is affected.

What it is: CVE-2019-1647 is a high-severity authentication bypass vulnerability in Cisco SD-WAN Solution, published on 24 Jan 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-2019-1647 in the wild and no public exploit code.

Affected product: Cisco SD-WAN Solution. 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-2019-1647/ (Markdown: https://insights.sbomify.com/CVE-2019-1647/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-1647
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-1647
- OSV: https://osv.dev/vulnerability/CVE-2019-1647

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-1647/
Summaries are generated and may contain mistakes; the official description above is the record.