# CVE-2009-4019: Denial of service in n/a

> Remote authenticated users can crash the MySQL daemon by executing crafted SELECT statements with subqueries or GeomFromWKB functions.

- **Severity:** Medium 4.0 (`AV:N/AC:L/Au:S/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 30 Nov 2009
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-pvv2-gf98-5mv3

## What is CVE-2009-4019?

CVE-2009-4019 is a medium-severity denial of service vulnerability in Mysql Mysql, published on 30 Nov 2009. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

mysqld in MySQL 5.0.x before 5.0.88 and 5.1.x before 5.1.41 does not (1) properly handle errors during execution of certain SELECT statements with subqueries, and does not (2) preserve certain null_value flags during execution of statements that use the GeomFromWKB function, which allows remote authenticated users to cause a denial of service (daemon crash) via a crafted statement.

## Which versions are affected by CVE-2009-4019?

It affects 2 products.


Products: Mysql Mysql, Oracle Mysql.

## How do I fix CVE-2009-4019?

Upgrade to a fixed version.

## Is CVE-2009-4019 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-4019 exists.

Public exploit code:

- MySQL 6.0.9 - SELECT Statement WHERE Clause Sub-query Denial of Service (exploitdb)
- MySQL 6.0.9 - 'GeomFromWKB()' Function First Argument Geometry Value Handling Denial of Service (exploitdb)

## Other vulnerabilities in Mysql Mysql

- [CVE-2004-0627](https://insights.sbomify.com/CVE-2004-0627/): Auth bypass in n/a (critical 10.0)
- [CVE-2004-0628](https://insights.sbomify.com/CVE-2004-0628/): Memory corruption in n/a (critical 10.0)
- [CVE-2009-2446](https://insights.sbomify.com/CVE-2009-2446/): Other in n/a (high 8.5)
- [CVE-2012-0553](https://insights.sbomify.com/CVE-2012-0553/): Memory corruption in n/a (high 7.5)
- [CVE-2013-1492](https://insights.sbomify.com/CVE-2013-1492/): Memory corruption in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2009-4019 and fix it if it is affected.

What it is: CVE-2009-4019 is a medium-severity denial of service vulnerability in Mysql Mysql, published on 30 Nov 2009. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-4019 exists.

Affected product: Mysql Mysql. 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-2009-4019/ (Markdown: https://insights.sbomify.com/CVE-2009-4019/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2009-4019
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2009-4019
- OSV: https://osv.dev/vulnerability/CVE-2009-4019

---
From sbomify Insights: https://insights.sbomify.com/CVE-2009-4019/
Summaries are generated and may contain mistakes; the official description above is the record.