# CVE-2020-3236: Cisco Enterprise NFV Infrastructure Software Path Traversal Vulnerability

> Authenticated local attackers can exploit path traversal in Cisco NFVIS CLI to gain root access and read or modify arbitrary files.

- **Severity:** Medium 6.7 (`CVSS:3.0/AV:L/AC:L/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:** 18 Jun 2020
- **Updated:** 15 Nov 2024
- **Also known as:** GHSA-hg4p-q65f-q54v

## What is CVE-2020-3236?

CVE-2020-3236 is a medium-severity path traversal vulnerability in Cisco Enterprise NFV Infrastructure Software, published on 18 Jun 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability in the CLI of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an authenticated, local attacker to gain root shell access to the underlying operating system and overwrite or read arbitrary files. The attacker would need valid administrative credentials. This vulnerability is due to improper input validation of CLI command arguments. An attacker could exploit this vulnerability by using path traversal techniques when executing a vulnerable command. A successful exploit could allow the attacker to gain root shell access to the underlying operating system and overwrite or read arbitrary files on an affected device.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2020-3236?

It affects 1 product.


Products: Cisco Enterprise Nfv Infrastructure Software.

## How do I fix CVE-2020-3236?

No fix has been published for CVE-2020-3236 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-3236 being exploited?

There is no known exploitation of CVE-2020-3236 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Enterprise NFV Infrastructure Software

- [CVE-2022-20777](https://insights.sbomify.com/CVE-2022-20777/): Cisco Enterprise NFV Infrastructure Software Vulnerabilities (critical 9.9)
- [CVE-2022-20779](https://insights.sbomify.com/CVE-2022-20779/): Cisco Enterprise NFV Infrastructure Software Vulnerabilities (critical 9.9)
- [CVE-2022-20780](https://insights.sbomify.com/CVE-2022-20780/): Cisco Enterprise NFV Infrastructure Software Vulnerabilities (critical 9.9)
- [CVE-2021-34746](https://insights.sbomify.com/CVE-2021-34746/): Cisco Enterprise NFV Infrastructure Software Authentication Bypass Vulnerability (critical 9.8)
- [CVE-2020-3470](https://insights.sbomify.com/CVE-2020-3470/): Cisco Integrated Management Controller Multiple Remote Code Execution Vulnerabilities (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-3236 and fix it if it is affected.

What it is: CVE-2020-3236 is a medium-severity path traversal vulnerability in Cisco Enterprise NFV Infrastructure Software, published on 18 Jun 2020. 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-2020-3236 in the wild and no public exploit code.

Affected product: Cisco Enterprise NFV Infrastructure Software. 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-2020-3236/ (Markdown: https://insights.sbomify.com/CVE-2020-3236/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-3236
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-3236
- OSV: https://osv.dev/vulnerability/CVE-2020-3236

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-3236/
Summaries are generated and may contain mistakes; the official description above is the record.