# CVE-2019-1664: Cisco HyperFlex Software Unauthenticated Root Access Vulnerability

> Unauthenticated local attackers can gain root access to all nodes in a Cisco HyperFlex cluster via the hxterm service.

- **Severity:** High 8.1 (`CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H`)
- **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:** 21 Feb 2019
- **Updated:** 20 Nov 2024
- **Also known as:** GHSA-jjrr-rj68-xhw3

## What is CVE-2019-1664?

CVE-2019-1664 is a high-severity authentication bypass vulnerability in Cisco HyperFlex HX-Series, published on 21 Feb 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 hxterm service of Cisco HyperFlex Software could allow an unauthenticated, local attacker to gain root access to all nodes in the cluster. The vulnerability is due to insufficient authentication controls. An attacker could exploit this vulnerability by connecting to the hxterm service as a non-privileged, local user. A successful exploit could allow the attacker to gain root access to all member nodes of the HyperFlex cluster. This vulnerability affects Cisco HyperFlex Software Releases prior to 3.5(2a).

Weakness: CWE-287 (Improper Authentication), CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2019-1664?

It affects 1 product.


Products: Cisco Hyperflex Hx Data Platform.

## How do I fix CVE-2019-1664?

No fix has been published for CVE-2019-1664 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-1664 being exploited?

There is no known exploitation of CVE-2019-1664 in the wild and no public exploit code.

## Other vulnerabilities in Cisco HyperFlex HX-Series

- [CVE-2021-1497](https://insights.sbomify.com/CVE-2021-1497/): Cisco HyperFlex HX Installer Virtual Machine Command Injection (critical 9.8, exploited in the wild)
- [CVE-2021-1498](https://insights.sbomify.com/CVE-2021-1498/): Cisco HyperFlex HX Data Platform Command Injection (critical 9.8, exploited in the wild)
- [CVE-2018-15380](https://insights.sbomify.com/CVE-2018-15380/): Cisco HyperFlex Software Command Injection Vulnerability (high 8.8)
- [CVE-2018-15382](https://insights.sbomify.com/CVE-2018-15382/): Cisco HyperFlex Software Static Signing Key Vulnerability (high 8.6)
- [CVE-2017-12315](https://insights.sbomify.com/CVE-2017-12315/): Information disclosure in Cisco HyperFlex System (medium 6.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-1664 and fix it if it is affected.

What it is: CVE-2019-1664 is a high-severity authentication bypass vulnerability in Cisco HyperFlex HX-Series, published on 21 Feb 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-2019-1664 in the wild and no public exploit code.

Affected product: Cisco HyperFlex HX-Series. 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-2019-1664/ (Markdown: https://insights.sbomify.com/CVE-2019-1664/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-1664
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-1664
- OSV: https://osv.dev/vulnerability/CVE-2019-1664

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-1664/
Summaries are generated and may contain mistakes; the official description above is the record.