# CVE-2017-14227: Memory corruption in n/a

> Remote attackers can cause a denial of service via heap-based buffer over-read in libbson due to incorrect length calculation.

- **Severity:** High 7.5 (`CVSS:3.0/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:** 9 Sep 2017
- **Updated:** 3 Nov 2025
- **Also known as:** DEBIAN-CVE-2017-14227, GHSA-98vg-qmpv-23vr, UBUNTU-CVE-2017-14227

## What is CVE-2017-14227?

CVE-2017-14227 is a high-severity memory corruption vulnerability in Mongodb Mongodb, published on 9 Sep 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

In MongoDB libbson 1.7.0, the bson_iter_codewscope function in bson-iter.c miscalculates a bson_utf8_validate length argument, which allows remote attackers to cause a denial of service (heap-based buffer over-read in the bson_utf8_validate function in bson-utf8.c), as demonstrated by bson-to-json.c.

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

## Which versions are affected by CVE-2017-14227?

It affects 1 product.


Products: Mongodb Mongodb.

## How do I fix CVE-2017-14227?

Upgrade to a fixed version.

## Is CVE-2017-14227 being exploited?

There is no known exploitation of CVE-2017-14227 in the wild and no public exploit code.

## Other vulnerabilities in Mongodb Mongodb

- [CVE-2025-14847](https://insights.sbomify.com/CVE-2025-14847/): MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency (high 8.7, exploited in the wild)
- [CVE-2026-82067](https://insights.sbomify.com/CVE-2026-82067/): Auth bypass in MongoDB Server (critical 9.2)
- [CVE-2026-13072](https://insights.sbomify.com/CVE-2026-13072/): MongoDB Improper Input Validation in Compute Mode External Data Processing Leading to Memory Corruption (critical 9.2)
- [CVE-2017-15535](https://insights.sbomify.com/CVE-2017-15535/): Denial of service in n/a (critical 9.1)
- [CVE-2026-18691](https://insights.sbomify.com/CVE-2026-18691/): Improper Authentication in MongoDB Intra-Cluster Connections Allows Credential Exposure (critical 9.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-14227 and fix it if it is affected.

What it is: CVE-2017-14227 is a high-severity memory corruption vulnerability in Mongodb Mongodb, published on 9 Sep 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-2017-14227 in the wild and no public exploit code.

Affected product: Mongodb Mongodb. 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-2017-14227/ (Markdown: https://insights.sbomify.com/CVE-2017-14227/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-14227
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-14227
- OSV: https://osv.dev/vulnerability/CVE-2017-14227

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-14227/
Summaries are generated and may contain mistakes; the official description above is the record.