# CVE-2021-3153: Auth bypass in n/a

> Attackers can bypass mandatory two-factor authentication enforcement in Terraform Enterprise organizations, potentially gaining unauthorized access.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Mar 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-mq55-rphv-c5m9

## What is CVE-2021-3153?

CVE-2021-3153 is a medium-severity authentication bypass vulnerability in n/a, published on 26 Mar 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

HashiCorp Terraform Enterprise up to v202102-2 failed to enforce an organization-level setting that required users within an organization to have two-factor authentication enabled. Fixed in v202103-1.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2021-3153?

It affects 1 product.


Products: Hashicorp Terraform Enterprise.

## How do I fix CVE-2021-3153?

No fix has been published for CVE-2021-3153 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-3153 being exploited?

There is no known exploitation of CVE-2021-3153 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2021-40862](https://insights.sbomify.com/CVE-2021-40862/): Information disclosure in n/a (high 8.8)
- [CVE-2022-25374](https://insights.sbomify.com/CVE-2022-25374/): Information disclosure in n/a (high 7.5)
- [CVE-2020-15511](https://insights.sbomify.com/CVE-2020-15511/): Auth bypass in n/a (medium 5.3)
- [CVE-2023-3114](https://insights.sbomify.com/CVE-2023-3114/): Terraform Enterprise Agent Pool Controls Allowed Unauthorized Workspaces To Target an Agent Pool (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-3153 and fix it if it is affected.

What it is: CVE-2021-3153 is a medium-severity authentication bypass vulnerability in n/a, published on 26 Mar 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-3153 in the wild and no public exploit code.

Affected product: n/a. 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-2021-3153/ (Markdown: https://insights.sbomify.com/CVE-2021-3153/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-3153
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-3153
- OSV: https://osv.dev/vulnerability/CVE-2021-3153

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-3153/
Summaries are generated and may contain mistakes; the official description above is the record.