# CVE-2019-3633: Buffer overflow in DLP Endpoint for Windows

> A local attacker can cause a Windows blue screen by sending a crafted message to McAfee DLP Endpoint, triggering a buffer overflow.

- **Severity:** Medium 4.4 (`CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 21 Aug 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-hjqq-29jh-86h4

## What is CVE-2019-3633?

CVE-2019-3633 is a medium-severity memory corruption vulnerability in McAfee, LLC Data Loss Prevention (DLPe) for Windows, published on 21 Aug 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Buffer overflow in McAfee Data Loss Prevention (DLPe) for Windows 11.x prior to 11.3.2.8 allows local user to cause the Windows operating system to "blue screen" via a carefully constructed message sent to DLPe which bypasses DLPe internal checks and results in DLPe reading unallocated memory.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2019-3633?

It affects 1 product.


Products: Mcafee Data Loss Prevention Endpoint.

## How do I fix CVE-2019-3633?

No fix has been published for CVE-2019-3633 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-3633 being exploited?

There is no known exploitation of CVE-2019-3633 in the wild and no public exploit code.

## Other vulnerabilities in McAfee, LLC Data Loss Prevention (DLPe) for Windows

- [CVE-2021-31848](https://insights.sbomify.com/CVE-2021-31848/): Data Loss Prevention (DLP) ePO extension - Cross site scripting (XSS) (high 8.4)
- [CVE-2021-31849](https://insights.sbomify.com/CVE-2021-31849/): Data Loss Prevention (DLP) ePO extension - SQL injection (high 8.4)
- [CVE-2021-31844](https://insights.sbomify.com/CVE-2021-31844/): Local Privilege Escalation in McAfee DLP Endpoint for Windows (high 8.2)
- [CVE-2021-23887](https://insights.sbomify.com/CVE-2021-23887/): Privilege escalation in McAfee DLP Endpoint for Windows (high 7.8)
- [CVE-2016-8012](https://insights.sbomify.com/CVE-2016-8012/): Privilege escalation in Data Loss Prevention Endpoint (DLPe) (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-3633 and fix it if it is affected.

What it is: CVE-2019-3633 is a medium-severity memory corruption vulnerability in McAfee, LLC Data Loss Prevention (DLPe) for Windows, published on 21 Aug 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-3633 in the wild and no public exploit code.

Affected product: McAfee, LLC Data Loss Prevention (DLPe) for Windows. 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-2019-3633/ (Markdown: https://insights.sbomify.com/CVE-2019-3633/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-3633
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-3633
- OSV: https://osv.dev/vulnerability/CVE-2019-3633

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-3633/
Summaries are generated and may contain mistakes; the official description above is the record.