# CVE-2019-10050: Memory corruption in n/a

> An attacker can cause a crash in Suricata by sending a specially crafted MPLS packet that triggers a buffer over-read.

- **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:** 13 May 2019
- **Updated:** 4 Aug 2024
- **Also known as:** DEBIAN-CVE-2019-10050, GHSA-25q8-m23x-4242, UBUNTU-CVE-2019-10050

## What is CVE-2019-10050?

CVE-2019-10050 is a high-severity memory corruption vulnerability in Oisf Suricata, published on 13 May 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A buffer over-read issue was discovered in Suricata 4.1.x before 4.1.4. If the input of the decode-mpls.c function DecodeMPLS is composed only of a packet of source address and destination address plus the correct type field and the right number for shim, an attacker can manipulate the control flow, such that the condition to leave the loop is true. After leaving the loop, the network packet has a length of 2 bytes. There is no validation of this length. Later on, the code tries to read at an empty position, leading to a crash.

Weakness: CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2019-10050?

It affects 1 product.


Products: Oisf Suricata.

## How do I fix CVE-2019-10050?

Upgrade to a fixed version.

## Is CVE-2019-10050 being exploited?

There is no known exploitation of CVE-2019-10050 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-2018-10244](https://insights.sbomify.com/CVE-2018-10244/): Integer overflow 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)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-10050 and fix it if it is affected.

What it is: CVE-2019-10050 is a high-severity memory corruption vulnerability in Oisf Suricata, published on 13 May 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-2019-10050 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-2019-10050/ (Markdown: https://insights.sbomify.com/CVE-2019-10050/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-10050
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-10050
- OSV: https://osv.dev/vulnerability/CVE-2019-10050

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-10050/
Summaries are generated and may contain mistakes; the official description above is the record.