# CVE-2019-6744: Auth bypass in Knox

> Local attackers with physical access can bypass Secure Folder authentication to disclose sensitive container contents.

- **Severity:** Medium 4.3 (`CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Feb 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-vr56-g7hp-gjv6

## What is CVE-2019-6744?

CVE-2019-6744 is a medium-severity authentication bypass vulnerability in Samsung Knox, published on 10 Feb 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

This vulnerability allows local attackers to disclose sensitive information on affected installations of Samsung Knox 1.2.02.39 on Samsung Galaxy S9 build G9600ZHS3ARL1 Secure Folder. An attacker must first obtain physical access to the device in order to exploit this vulnerability. The specific flaws exists within the the handling of the lock screen for Secure Folder. The issue results from the lack of proper validation that a user has correctly authenticated. An attacker can leverage this vulnerability to disclose the contents of the secure container. Was ZDI-CAN-7381.

Weakness: CWE-287 (Improper Authentication), CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2019-6744?

It affects 1 product.


Products: Samsung Knox.

## How do I fix CVE-2019-6744?

No fix has been published for CVE-2019-6744 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-6744 being exploited?

There is no known exploitation of CVE-2019-6744 in the wild and no public exploit code.

## Other vulnerabilities in Samsung Knox

- [CVE-2016-1920](https://insights.sbomify.com/CVE-2016-1920/): Security feature bypass in n/a (medium 5.5)
- [CVE-2016-3996](https://insights.sbomify.com/CVE-2016-3996/): Information disclosure in n/a (medium 5.5)
- [CVE-2016-1919](https://insights.sbomify.com/CVE-2016-1919/): Weak cryptography in n/a (medium 4.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-6744 and fix it if it is affected.

What it is: CVE-2019-6744 is a medium-severity authentication bypass vulnerability in Samsung Knox, published on 10 Feb 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-6744 in the wild and no public exploit code.

Affected product: Samsung Knox. 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-2019-6744/ (Markdown: https://insights.sbomify.com/CVE-2019-6744/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-6744
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-6744
- OSV: https://osv.dev/vulnerability/CVE-2019-6744

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-6744/
Summaries are generated and may contain mistakes; the official description above is the record.