# CVE-2018-10244: Integer overflow in n/a

> A malformed EtherNet/IP PDU triggers an integer overflow in Suricata, causing out-of-bounds reads and potential denial of service.

- **Severity:** Critical 9.8 (`CVSS:3.0/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:** Yes
- **Published:** 4 Apr 2019
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2018-10244, GHSA-pj4r-8xx2-hxgc, UBUNTU-CVE-2018-10244

## What is CVE-2018-10244?

CVE-2018-10244 is a critical vulnerability in Oisf Suricata, published on 4 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Suricata version 4.0.4 incorrectly handles the parsing of an EtherNet/IP PDU. A malformed PDU can cause the parsing code to read beyond the allocated data because DecodeENIPPDU in app-layer-enip-commmon.c has an integer overflow during a length check.

Weakness: CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2018-10244?

It affects 1 product.


Products: Oisf Suricata.

## How do I fix CVE-2018-10244?

Upgrade to a fixed version.

## Is CVE-2018-10244 being exploited?

There is no known exploitation of CVE-2018-10244 in the wild and no public exploit code.

## Other vulnerabilities in Oisf Suricata

- [CVE-2023-35853](https://insights.sbomify.com/CVE-2023-35853/): Code injection in n/a (critical 9.8)
- [CVE-2021-37592](https://insights.sbomify.com/CVE-2021-37592/): Other in n/a (critical 9.8)
- [CVE-2026-94083](https://insights.sbomify.com/CVE-2026-94083/): Memory corruption in Suricata (critical 9.4)
- [CVE-2026-94084](https://insights.sbomify.com/CVE-2026-94084/): Use after free in Suricata (critical 9.4)
- [CVE-2026-45764](https://insights.sbomify.com/CVE-2026-45764/): Suricata http2: protocol-change type confusion can lead to denial of service (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-10244 and fix it if it is affected.

What it is: CVE-2018-10244 is a critical vulnerability in Oisf Suricata, published on 4 Apr 2019. 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-2018-10244 in the wild and no public exploit code.

Affected product: Oisf Suricata. 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-2018-10244/ (Markdown: https://insights.sbomify.com/CVE-2018-10244/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-10244
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-10244
- OSV: https://osv.dev/vulnerability/CVE-2018-10244

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-10244/
Summaries are generated and may contain mistakes; the official description above is the record.