# CVE-2021-41752: Denial of service in n/a

> An attacker can cause a stack overflow and crash the application by triggering unbounded recursive calls in the Jerryscript JavaScript engine.

- **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:** 5 Apr 2022
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-8rhh-q6h2-xgx4, UBUNTU-CVE-2021-41752

## What is CVE-2021-41752?

CVE-2021-41752 is a critical denial of service vulnerability in Jerryscript Jerryscript, published on 5 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Stack overflow vulnerability in Jerryscript before commit e1ce7dd7271288be8c0c8136eea9107df73a8ce2 on Oct 20, 2021 due to an unbounded recursive call to the new opt() function.

Weakness: CWE-674 (Uncontrolled Recursion)

## Which versions are affected by CVE-2021-41752?

It affects 1 product.


Products: Jerryscript Jerryscript.

## How do I fix CVE-2021-41752?

No fix has been published for CVE-2021-41752 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-41752 being exploited?

There is no known exploitation of CVE-2021-41752 in the wild and no public exploit code.

## Other vulnerabilities in Jerryscript Jerryscript

- [CVE-2023-36109](https://insights.sbomify.com/CVE-2023-36109/): Memory corruption in n/a (critical 9.8)
- [CVE-2023-38961](https://insights.sbomify.com/CVE-2023-38961/): Memory corruption in n/a (critical 9.8)
- [CVE-2020-22597](https://insights.sbomify.com/CVE-2020-22597/): Memory corruption in n/a (critical 9.8)
- [CVE-2021-42863](https://insights.sbomify.com/CVE-2021-42863/): Memory corruption in n/a (critical 9.8)
- [CVE-2021-43453](https://insights.sbomify.com/CVE-2021-43453/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-41752 and fix it if it is affected.

What it is: CVE-2021-41752 is a critical denial of service vulnerability in Jerryscript Jerryscript, published on 5 Apr 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-2021-41752 in the wild and no public exploit code.

Affected product: Jerryscript Jerryscript. 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-2021-41752/ (Markdown: https://insights.sbomify.com/CVE-2021-41752/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-41752
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-41752
- OSV: https://osv.dev/vulnerability/CVE-2021-41752

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-41752/
Summaries are generated and may contain mistakes; the official description above is the record.