# CVE-2020-3243: Multiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express for Big Data

> Remote attackers can bypass authentication or perform directory traversal attacks on Cisco UCS Director via its REST API.

- **Severity:** Critical 9.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Apr 2020
- **Updated:** 15 Nov 2024
- **Also known as:** GHSA-3p24-qq22-3v59

## What is CVE-2020-3243?

CVE-2020-3243 is a critical authentication bypass vulnerability in Cisco UCS Director, published on 15 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Multiple vulnerabilities in the REST API of Cisco UCS Director and Cisco UCS Director Express for Big Data may allow a remote attacker to bypass authentication or conduct directory traversal attacks on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

Weakness: CWE-269 (Improper Privilege Management), CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2020-3243?

It affects 2 products.


Products: Cisco Ucs Director, Cisco Ucs Director Express for Big Data.

## How do I fix CVE-2020-3243?

No fix has been published for CVE-2020-3243 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-3243 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-3243 exists.

Public exploit code:

- Cisco UCS Director Cloupia Script RCE (metasploit)

## Other vulnerabilities in Cisco UCS Director

- [CVE-2020-3239](https://insights.sbomify.com/CVE-2020-3239/): Multiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express for Big Data (critical 9.8)
- [CVE-2020-3240](https://insights.sbomify.com/CVE-2020-3240/): Multiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express for Big Data (critical 9.8)
- [CVE-2020-3247](https://insights.sbomify.com/CVE-2020-3247/): Multiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express for Big Data (critical 9.8)
- [CVE-2020-3248](https://insights.sbomify.com/CVE-2020-3248/): Multiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express for Big Data (critical 9.8)
- [CVE-2020-3249](https://insights.sbomify.com/CVE-2020-3249/): Multiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express for Big Data (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-3243 and fix it if it is affected.

What it is: CVE-2020-3243 is a critical authentication bypass vulnerability in Cisco UCS Director, published on 15 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-3243 exists.

Affected product: Cisco UCS Director. 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-2020-3243/ (Markdown: https://insights.sbomify.com/CVE-2020-3243/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-3243
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-3243
- OSV: https://osv.dev/vulnerability/CVE-2020-3243

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-3243/
Summaries are generated and may contain mistakes; the official description above is the record.