# CVE-2019-1733: Cisco NX-OS Software NX-API Sandbox Cross-Site Scripting Vulnerability

> An authenticated attacker can execute arbitrary scripts in the NX-API Sandbox interface via a crafted link, requiring user interaction.

- **Severity:** Medium 5.4 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 15 May 2019
- **Updated:** 21 Nov 2024
- **Also known as:** GHSA-qppv-v6vq-jq33

## What is CVE-2019-1733?

CVE-2019-1733 is a medium-severity cross-site scripting vulnerability in Cisco Nx-Os, published on 15 May 2019. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

A vulnerability in the NX API (NX-API) Sandbox interface for Cisco NX-OS Software could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the NX-API Sandbox interface of an affected device. The vulnerability is due to insufficient validation of user-supplied input by the NX-API Sandbox interface. An attacker could exploit this vulnerability by persuading a user of the NX-API Sandbox interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected NX-API Sandbox interface.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2019-1733?

It affects 1 product.


Products: Cisco Nx-Os.

## How do I fix CVE-2019-1733?

No fix has been published for CVE-2019-1733 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-1733 being exploited?

There is no known exploitation of CVE-2019-1733 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Nx-Os

- [CVE-2024-20399](https://insights.sbomify.com/CVE-2024-20399/): Cisco NX-OS Command Injection (medium 6.0, exploited in the wild)
- [CVE-2021-1361](https://insights.sbomify.com/CVE-2021-1361/): Cisco NX-OS Software Unauthenticated Arbitrary File Actions Vulnerability (critical 9.8)
- [CVE-2018-0301](https://insights.sbomify.com/CVE-2018-0301/): Memory corruption in Cisco NX-OS unknown (critical 9.8)
- [CVE-2016-1453](https://insights.sbomify.com/CVE-2016-1453/): Memory corruption in n/a (critical 9.8)
- [CVE-2016-1341](https://insights.sbomify.com/CVE-2016-1341/): Hardcoded credentials in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-1733 and fix it if it is affected.

What it is: CVE-2019-1733 is a medium-severity cross-site scripting vulnerability in Cisco Nx-Os, published on 15 May 2019. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-1733 in the wild and no public exploit code.

Affected product: Cisco Nx-Os. 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-2019-1733/ (Markdown: https://insights.sbomify.com/CVE-2019-1733/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-1733
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-1733
- OSV: https://osv.dev/vulnerability/CVE-2019-1733

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-1733/
Summaries are generated and may contain mistakes; the official description above is the record.