# CVE-2019-1732: Cisco NX-OS Software Remote Package Manager Command Injection Vulnerability

> An authenticated local administrator can exploit a race condition in the Remote Package Manager to inject arbitrary commands on Cisco NX-OS devices.

- **Severity:** Medium 6.4 (`CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 May 2019
- **Updated:** 20 Nov 2024
- **Also known as:** GHSA-p72g-8563-4jg8

## What is CVE-2019-1732?

CVE-2019-1732 is a medium-severity command injection vulnerability in Cisco Nx-Os, published on 15 May 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 Remote Package Manager (RPM) subsystem of Cisco NX-OS Software could allow an authenticated, local attacker with administrator credentials to leverage a time-of-check, time-of-use (TOCTOU) race condition to corrupt local variables, which could lead to arbitrary command injection. The vulnerability is due to the lack of a proper locking mechanism on critical variables that need to stay static until used. An attacker could exploit this vulnerability by authenticating to an affected device and issuing a set of RPM-related CLI commands. A successful exploit could allow the attacker to perform arbitrary command injection. The attacker would need administrator credentials for the targeted device.

Weakness: CWE-667 (Improper Locking), CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2019-1732?

It affects 2 products.


Products: Cisco Nx-Os, Cisco Nx Os.

## How do I fix CVE-2019-1732?

No fix has been published for CVE-2019-1732 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-1732 being exploited?

There is no known exploitation of CVE-2019-1732 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-2019-1732 and fix it if it is affected.

What it is: CVE-2019-1732 is a medium-severity command injection vulnerability in Cisco Nx-Os, published on 15 May 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-2019-1732 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-2019-1732/ (Markdown: https://insights.sbomify.com/CVE-2019-1732/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-1732
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-1732
- OSV: https://osv.dev/vulnerability/CVE-2019-1732

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-1732/
Summaries are generated and may contain mistakes; the official description above is the record.