# CVE-2021-33622: Other in n/a

> Singularity container runtime fails to check function return values, potentially leading to undefined behavior or security bypasses.

- **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:** 15 Jun 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-cq54-mjwx-5pjw, UBUNTU-CVE-2021-33622

## What is CVE-2021-33622?

CVE-2021-33622 is a critical vulnerability in n/a, published on 15 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Sylabs Singularity 3.5.x and 3.6.x, and SingularityPRO before 3.5-8, has an Incorrect Check of a Function's Return Value.

Weakness: CWE-754 (Improper Check for Unusual or Exceptional Conditions)

## Which versions are affected by CVE-2021-33622?

It affects 2 products.


Products: Sylabs Singularity, Sylabs Singularitypro.

## How do I fix CVE-2021-33622?

No fix has been published for CVE-2021-33622 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-33622 being exploited?

There is no known exploitation of CVE-2021-33622 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2021-33027](https://insights.sbomify.com/CVE-2021-33027/): Weak cryptography in n/a (critical 9.8)
- [CVE-2018-19295](https://insights.sbomify.com/CVE-2018-19295/): Sylabs Singularity Improper Input Validation (high 7.8)
- [CVE-2020-13845](https://insights.sbomify.com/CVE-2020-13845/): Execution Control List (ECL) Is Insecure in Singularity (high 7.5)
- [CVE-2020-13846](https://insights.sbomify.com/CVE-2020-13846/): "Verify All" Returns Success Despite Validation Failures in Singularity (high 7.5)
- [CVE-2020-13847](https://insights.sbomify.com/CVE-2020-13847/): Other in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-33622 and fix it if it is affected.

What it is: CVE-2021-33622 is a critical vulnerability in n/a, published on 15 Jun 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-2021-33622 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-2021-33622/ (Markdown: https://insights.sbomify.com/CVE-2021-33622/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-33622
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-33622
- OSV: https://osv.dev/vulnerability/CVE-2021-33622

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-33622/
Summaries are generated and may contain mistakes; the official description above is the record.