# CVE-2019-3640: Data Loss Prevention - Unprotected Transport of Credentials

> Remote attackers can intercept LDAP credentials because the ePO extension uses unencrypted connections for connectivity tests.

- **Severity:** Medium 4.8 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 14 Nov 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-jcj2-r7jq-h3h2

## What is CVE-2019-3640?

CVE-2019-3640 is a medium-severity vulnerability in McAfee Data Loss Prevention, published on 14 Nov 2019. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Unprotected Transport of Credentials in ePO extension in McAfee Data Loss Prevention 11.x prior to 11.4.0 allows remote attackers with access to the network to collect login details to the LDAP server via the ePO extension not using a secure connection when testing LDAP connectivity.

Weakness: CWE-319 (Cleartext Transmission of Sensitive Information)

## Which versions are affected by CVE-2019-3640?

It affects 1 product.


Products: Mcafee Data Loss Prevention.

## How do I fix CVE-2019-3640?

No fix has been published for CVE-2019-3640 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-3640 being exploited?

There is no known exploitation of CVE-2019-3640 in the wild and no public exploit code.

## Other vulnerabilities in McAfee Data Loss Prevention

- [CVE-2021-4088](https://insights.sbomify.com/CVE-2021-4088/): Blind SQL injection in DLP ePO extension (high 8.4)
- [CVE-2020-7346](https://insights.sbomify.com/CVE-2020-7346/): Privilege escalation in McAfee DLP Endpoint for Windows (high 7.8)
- [CVE-2020-7304](https://insights.sbomify.com/CVE-2020-7304/): DLP ePO extension - Cross-site request forgery (high 7.6)
- [CVE-2020-7305](https://insights.sbomify.com/CVE-2020-7305/): DLP ePO extension - Privilege escalation (medium 6.7)
- [CVE-2020-7302](https://insights.sbomify.com/CVE-2020-7302/): DLP ePO extension - Unrestricted Upload of File with Dangerous Type (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-3640 and fix it if it is affected.

What it is: CVE-2019-3640 is a medium-severity vulnerability in McAfee Data Loss Prevention, published on 14 Nov 2019. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-3640 in the wild and no public exploit code.

Affected product: McAfee Data Loss Prevention. 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-2019-3640/ (Markdown: https://insights.sbomify.com/CVE-2019-3640/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-3640
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-3640
- OSV: https://osv.dev/vulnerability/CVE-2019-3640

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-3640/
Summaries are generated and may contain mistakes; the official description above is the record.