# CVE-2021-3325: Auth bypass in n/a

> Remote attackers can bypass Basic Authentication in default Monitorix installations due to unsafe access-control feature introduction.

- **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:** 27 Jan 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-3r2m-6v2h-6jqr

## What is CVE-2021-3325?

CVE-2021-3325 is a critical authentication bypass vulnerability in Fedoraproject Fedora, published on 27 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Monitorix 3.13.0 allows remote attackers to bypass Basic Authentication in a default installation (i.e., an installation without a hosts_deny option). This issue occurred because a new access-control feature was introduced without considering that some exiting installations became unsafe, upon an update to 3.13.0, unless the new feature was immediately configured.

## Which versions are affected by CVE-2021-3325?

It affects 2 products.


Products: Fedoraproject Fedora, Fibranet Monitorix.

## How do I fix CVE-2021-3325?

No fix has been published for CVE-2021-3325 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-3325 being exploited?

There is no known exploitation of CVE-2021-3325 in the wild and no public exploit code.

## Other vulnerabilities in Fedoraproject Fedora

- [CVE-2024-4577](https://insights.sbomify.com/CVE-2024-4577/): PHP-CGI OS Command Injection (critical 9.8, exploited in the wild)
- [CVE-2021-39226](https://insights.sbomify.com/CVE-2021-39226/): Grafana Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2019-5544](https://insights.sbomify.com/CVE-2019-5544/): VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2024-4947](https://insights.sbomify.com/CVE-2024-4947/): Google Chromium V8 Type Confusion (critical 9.6, exploited in the wild)
- [CVE-2024-4671](https://insights.sbomify.com/CVE-2024-4671/): Google Chromium Visuals Use-After-Free (critical 9.6, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-3325 and fix it if it is affected.

What it is: CVE-2021-3325 is a critical authentication bypass vulnerability in Fedoraproject Fedora, published on 27 Jan 2021. 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-2021-3325 in the wild and no public exploit code.

Affected product: Fedoraproject Fedora. 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-2021-3325/ (Markdown: https://insights.sbomify.com/CVE-2021-3325/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-3325
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-3325
- OSV: https://osv.dev/vulnerability/CVE-2021-3325

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-3325/
Summaries are generated and may contain mistakes; the official description above is the record.