# CVE-2016-9108: Integer overflow in n/a

> Attackers can cause a denial of service via a crafted regular expression due to an integer overflow in the MuJS JavaScript engine.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 3 Feb 2017
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-gw5r-44xc-8j82, UBUNTU-CVE-2016-9108

## What is CVE-2016-9108?

CVE-2016-9108 is a high-severity vulnerability in Fedoraproject Fedora, published on 3 Feb 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Integer overflow in the js_regcomp function in regexp.c in Artifex Software, Inc. MuJS before commit b6de34ac6d8bb7dd5461c57940acfbd3ee7fd93e allows attackers to cause a denial of service (application crash) via a crafted regular expression.

Weakness: CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2016-9108?

It affects 2 products.


Products: Artifex Mujs, Fedoraproject Fedora.

## How do I fix CVE-2016-9108?

Apply the vendor's patch.

## Is CVE-2016-9108 being exploited?

There is no known exploitation of CVE-2016-9108 in the wild and no public exploit code.

## Other vulnerabilities in Fedoraproject Fedora

- [CVE-2021-33796](https://insights.sbomify.com/CVE-2021-33796/): Use after free in MuJS (critical 10.0)
- [CVE-2021-33797](https://insights.sbomify.com/CVE-2021-33797/): Integer overflow in mujs (critical 9.8)
- [CVE-2021-45005](https://insights.sbomify.com/CVE-2021-45005/): Memory corruption in n/a (critical 9.8)
- [CVE-2019-12798](https://insights.sbomify.com/CVE-2019-12798/): Integer overflow in n/a (critical 9.8)
- [CVE-2019-11411](https://insights.sbomify.com/CVE-2019-11411/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-9108 and fix it if it is affected.

What it is: CVE-2016-9108 is a high-severity vulnerability in Fedoraproject Fedora, published on 3 Feb 2017. 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-2016-9108 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-2016-9108/ (Markdown: https://insights.sbomify.com/CVE-2016-9108/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-9108
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-9108
- OSV: https://osv.dev/vulnerability/CVE-2016-9108

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-9108/
Summaries are generated and may contain mistakes; the official description above is the record.