# CVE-2021-1306: Cisco ADE-OS Local File Inclusion Vulnerability

> Authenticated local attackers can exploit improper CLI validation to identify directories and write arbitrary files on Cisco network management devices.

- **Severity:** Medium 4.4 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N`)
- **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:** 22 May 2021
- **Updated:** 8 Nov 2024
- **Also known as:** GHSA-v764-45vr-f9mp

## What is CVE-2021-1306?

CVE-2021-1306 is a medium-severity path traversal vulnerability in Cisco Evolved Programmable Network Manager, published on 22 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability in the restricted shell of Cisco Evolved Programmable Network (EPN) Manager, Cisco Identity Services Engine (ISE), and Cisco Prime Infrastructure could allow an authenticated, local attacker to identify directories and write arbitrary files to the file system. This vulnerability is due to improper validation of parameters that are sent to a CLI command within the restricted shell. An attacker could exploit this vulnerability by logging in to the device and issuing certain CLI commands. A successful exploit could allow the attacker to identify file directories on the affected device and write arbitrary files to the file system on the affected device. To exploit this vulnerability, the attacker must be an authenticated shell user.

Weakness: CWE-610 (Externally Controlled Reference to a Resource in Another Sphere), CWE-73 (External Control of File Name or Path)

## Which versions are affected by CVE-2021-1306?

It affects 3 products.


Products: Cisco Evolved Programmable Network Manager, Cisco Identity Services Engine, Cisco Prime Infrastructure.

## How do I fix CVE-2021-1306?

No fix has been published for CVE-2021-1306 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-1306 being exploited?

There is no known exploitation of CVE-2021-1306 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Evolved Programmable Network Manager

- [CVE-2016-1289](https://insights.sbomify.com/CVE-2016-1289/): Code injection in n/a (critical 9.8)
- [CVE-2016-1291](https://insights.sbomify.com/CVE-2016-1291/): Deserialization in n/a (critical 9.8)
- [CVE-2021-1487](https://insights.sbomify.com/CVE-2021-1487/): Cisco Prime Infrastructure and Cisco Evolved Programmable Network Manager Command Injection Vulnerability (high 8.8)
- [CVE-2019-1821](https://insights.sbomify.com/CVE-2019-1821/): Cisco Prime Infrastructure and Evolved Programmable Network Manager Remote Code Execution Vulnerabilities (high 8.8)
- [CVE-2019-1822](https://insights.sbomify.com/CVE-2019-1822/): Cisco Prime Infrastructure and Evolved Programmable Network Manager Remote Code Execution Vulnerabilities (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-1306 and fix it if it is affected.

What it is: CVE-2021-1306 is a medium-severity path traversal vulnerability in Cisco Evolved Programmable Network Manager, published on 22 May 2021. 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-2021-1306 in the wild and no public exploit code.

Affected product: Cisco Evolved Programmable Network Manager. 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-2021-1306/ (Markdown: https://insights.sbomify.com/CVE-2021-1306/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-1306
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-1306
- OSV: https://osv.dev/vulnerability/CVE-2021-1306

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-1306/
Summaries are generated and may contain mistakes; the official description above is the record.