# CVE-2021-36294: Auth bypass in VNX Control Station

> Remote attackers can bypass authentication by forging cookies to log in as any user on Dell VNX2 OE for File systems.

- **Severity:** Critical 9.8 (`CVSS:3.1/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:** 25 Jan 2022
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-h72m-3m74-9ppq

## What is CVE-2021-36294?

CVE-2021-36294 is a critical authentication bypass vulnerability in Dell VNX Control Station, published on 25 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Dell VNX2 OE for File versions 8.1.21.266 and earlier, contain an authentication bypass vulnerability. A remote unauthenticated attacker may exploit this vulnerability by forging a cookie to login as any user.

Weakness: CWE-330 (Use of Insufficiently Random Values), CWE-331 (Insufficient Entropy)

## Which versions are affected by CVE-2021-36294?

It affects 1 product.


Products: Dell Emc Unity Operating Environment.

## How do I fix CVE-2021-36294?

No fix has been published for CVE-2021-36294 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-36294 being exploited?

There is no known exploitation of CVE-2021-36294 in the wild and no public exploit code.

## Other vulnerabilities in Dell VNX Control Station

- [CVE-2021-36288](https://insights.sbomify.com/CVE-2021-36288/): Path traversal in VNX2 (high 8.6)
- [CVE-2021-36289](https://insights.sbomify.com/CVE-2021-36289/): Information disclosure in VNX Control Station (high 7.8)
- [CVE-2019-3741](https://insights.sbomify.com/CVE-2019-3741/): Information disclosure in Unity (high 7.8)
- [CVE-2018-11064](https://insights.sbomify.com/CVE-2018-11064/): Privilege escalation in Dell EMC Unity (high 7.8)
- [CVE-2020-29490](https://insights.sbomify.com/CVE-2020-29490/): Denial of service in Unity (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-36294 and fix it if it is affected.

What it is: CVE-2021-36294 is a critical authentication bypass vulnerability in Dell VNX Control Station, published on 25 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-36294 in the wild and no public exploit code.

Affected product: Dell VNX Control Station. 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-2021-36294/ (Markdown: https://insights.sbomify.com/CVE-2021-36294/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-36294
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-36294
- OSV: https://osv.dev/vulnerability/CVE-2021-36294

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-36294/
Summaries are generated and may contain mistakes; the official description above is the record.