# CVE-2019-6292: Denial of service in n/a

> Remote attackers can cause a denial of service via stack exhaustion in the yaml-cpp library by submitting a malicious YAML file.

- **Severity:** Medium 6.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/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:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 15 Jan 2019
- **Updated:** 16 Sep 2024
- **Also known as:** AZL-7009, DEBIAN-CVE-2019-6292, GHSA-v84h-mwmj-46pf, UBUNTU-CVE-2019-6292

## What is CVE-2019-6292?

CVE-2019-6292 is a medium-severity denial of service vulnerability in n/a, published on 15 Jan 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

An issue was discovered in singledocparser.cpp in yaml-cpp (aka LibYaml-C++) 0.6.2. Stack Exhaustion occurs in YAML::SingleDocParser, and there is a stack consumption problem caused by recursive stack frames: HandleCompactMap, HandleMap, HandleFlowSequence, HandleSequence, HandleNode. Remote attackers could leverage this vulnerability to cause a denial-of-service via a cpp file.

Weakness: CWE-674 (Uncontrolled Recursion)

## Which versions are affected by CVE-2019-6292?

It affects 1 product.


Products: Yaml-Cpp Project Yaml-Cpp.

## How do I fix CVE-2019-6292?

Upgrade to a fixed version.

## Is CVE-2019-6292 being exploited?

There is no known exploitation of CVE-2019-6292 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2017-11692](https://insights.sbomify.com/CVE-2017-11692/): Denial of service in n/a (high 7.5)
- [CVE-2019-6285](https://insights.sbomify.com/CVE-2019-6285/): Denial of service in n/a (medium 6.5)
- [CVE-2018-20573](https://insights.sbomify.com/CVE-2018-20573/): Denial of service in n/a (medium 6.5)
- [CVE-2018-20574](https://insights.sbomify.com/CVE-2018-20574/): Denial of service in n/a (medium 6.5)
- [CVE-2017-5950](https://insights.sbomify.com/CVE-2017-5950/): Denial of service in n/a (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-6292 and fix it if it is affected.

What it is: CVE-2019-6292 is a medium-severity denial of service vulnerability in n/a, published on 15 Jan 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-6292 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-2019-6292/ (Markdown: https://insights.sbomify.com/CVE-2019-6292/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-6292
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-6292
- OSV: https://osv.dev/vulnerability/CVE-2019-6292

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-6292/
Summaries are generated and may contain mistakes; the official description above is the record.