# CVE-2017-10203: Denial of service in MySQL Connectors

> An unauthenticated attacker can cause a partial denial of service in MySQL Connector/Net via network access.

- **Severity:** Medium 5.3 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Oct 2017
- **Updated:** 4 Oct 2024
- **Also known as:** GHSA-x3qh-5xjx-qrmx

## What is CVE-2017-10203?

CVE-2017-10203 is a medium-severity denial of service vulnerability in Oracle Corporation MySQL Connectors, published on 19 Oct 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Vulnerability in the MySQL Connectors component of Oracle MySQL (subcomponent: Connector/Net). Supported versions that are affected are 6.9.9 and earlier. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Connectors. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of MySQL Connectors. CVSS 3.0 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).

## Which versions are affected by CVE-2017-10203?

It affects 1 product.


Products: Oracle Mysql Connector\/Net.

## How do I fix CVE-2017-10203?

No fix has been published for CVE-2017-10203 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-10203 being exploited?

There is no known exploitation of CVE-2017-10203 in the wild and no public exploit code.

## Other vulnerabilities in Oracle Corporation MySQL Connectors

- [CVE-2026-60193](https://insights.sbomify.com/CVE-2026-60193/): Auth bypass in MySQL Connectors (high 8.5)
- [CVE-2026-60192](https://insights.sbomify.com/CVE-2026-60192/): Auth bypass in MySQL Connectors (high 8.1)
- [CVE-2018-2585](https://insights.sbomify.com/CVE-2018-2585/): Denial of service in MySQL Connectors (high 7.5)
- [CVE-2026-60317](https://insights.sbomify.com/CVE-2026-60317/): Missing authorization in MySQL Connectors (high 7.4)
- [CVE-2009-4833](https://insights.sbomify.com/CVE-2009-4833/): Security feature bypass in n/a (medium 5.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-10203 and fix it if it is affected.

What it is: CVE-2017-10203 is a medium-severity denial of service vulnerability in Oracle Corporation MySQL Connectors, published on 19 Oct 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-2017-10203 in the wild and no public exploit code.

Affected product: Oracle Corporation MySQL Connectors. 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-2017-10203/ (Markdown: https://insights.sbomify.com/CVE-2017-10203/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-10203
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-10203
- OSV: https://osv.dev/vulnerability/CVE-2017-10203

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-10203/
Summaries are generated and may contain mistakes; the official description above is the record.