# CVE-2021-22995: Missing authorization in BIG-IQ

> Attackers can bypass authentication on the Corosync daemon in BIG-IQ high availability setups using a Quorum device, potentially disrupting failover mechanisms.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 31 Mar 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-f9gc-34jh-7gvq

## What is CVE-2021-22995?

CVE-2021-22995 is a high-severity missing authorization vulnerability in F5 Big-Iq Centralized Management, published on 31 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

On all 7.x and 6.x versions (fixed in 8.0.0), BIG-IQ high availability (HA) when using a Quorum device for automatic failover does not implement any form of authentication with the Corosync daemon. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2021-22995?

It affects 1 product.


Products: F5 Big-Iq Centralized Management.

## How do I fix CVE-2021-22995?

No fix has been published for CVE-2021-22995 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-22995 being exploited?

There is no known exploitation of CVE-2021-22995 in the wild and no public exploit code.

## Other vulnerabilities in F5 Big-Iq Centralized Management

- [CVE-2020-5868](https://insights.sbomify.com/CVE-2020-5868/): Command injection in BIG-IQ (critical 9.8)
- [CVE-2021-23005](https://insights.sbomify.com/CVE-2021-23005/): Weak cryptography in BIG-IQ (critical 9.1)
- [CVE-2020-5869](https://insights.sbomify.com/CVE-2020-5869/): Information disclosure in BIG-IQ (critical 9.1)
- [CVE-2020-5870](https://insights.sbomify.com/CVE-2020-5870/): Missing authorization in BIG-IQ (high 8.1)
- [CVE-2021-22996](https://insights.sbomify.com/CVE-2021-22996/): Denial of service in BIG-IQ (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-22995 and fix it if it is affected.

What it is: CVE-2021-22995 is a high-severity missing authorization vulnerability in F5 Big-Iq Centralized Management, published on 31 Mar 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-2021-22995 in the wild and no public exploit code.

Affected product: F5 Big-Iq Centralized Management. 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-2021-22995/ (Markdown: https://insights.sbomify.com/CVE-2021-22995/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-22995
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-22995
- OSV: https://osv.dev/vulnerability/CVE-2021-22995

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-22995/
Summaries are generated and may contain mistakes; the official description above is the record.