# CVE-2019-14584: Null dereference in Tianocore EDK2

> An authenticated local attacker can exploit a null pointer dereference in Tianocore EDK2 to escalate privileges.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **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:** Yes
- **Published:** 3 Jun 2021
- **Updated:** 5 Aug 2024
- **Also known as:** AZL-40833, AZL-41086, DEBIAN-CVE-2019-14584, GHSA-r5j3-cc22-8xx9, SUSE-SU-2020:3883-1, SUSE-SU-2020:3884-1, SUSE-SU-2020:3885-1, UBUNTU-CVE-2019-14584, openSUSE-SU-2020:2314-1, openSUSE-SU-2020:2336-1, openSUSE-SU-2021:0598-1, openSUSE-SU-2024:11382-1

## What is CVE-2019-14584?

CVE-2019-14584 is a high-severity vulnerability in Tianocore EDK2, published on 3 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Null pointer dereference in Tianocore EDK2 may allow an authenticated user to potentially enable escalation of privilege via local access.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2019-14584?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `ovmf` | SUSE:Linux Enterprise Module for Server Applications 15 SP1 | All versions | 2017+git1510945757.b2662641d5-5.38.1 |
| `ovmf` | SUSE:Linux Enterprise Module for Server Applications 15 SP2 | All versions | 201911-7.8.1 |
| `ovmf` | SUSE:Linux Enterprise Server 12 SP5 | All versions | 2017+git1510945757.b2662641d5-3.32.1 |
| `ovmf` | SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 2017+git1510945757.b2662641d5-3.32.1 |
| `ovmf` | openSUSE:Leap 15.1 | All versions | 2017+git1510945757.b2662641d5-lp151.11.12.1 |
| `ovmf` | openSUSE:Leap 15.2 | All versions | 201911-lp152.6.8.1 |
| `shim` | openSUSE:Leap 15.2 | All versions | 15.4-lp152.4.8.1 |
| `shim` | openSUSE:Tumbleweed | All versions | 15.4-4.2 |

Products: Tianocore Edk2.

## How do I fix CVE-2019-14584?

Apply the vendor's patch.

## Is CVE-2019-14584 being exploited?

There is no known exploitation of CVE-2019-14584 in the wild and no public exploit code.

## Other vulnerabilities in Tianocore EDK2

- [CVE-2023-45230](https://insights.sbomify.com/CVE-2023-45230/): Buffer Overflow in EDK II Network Package (high 8.3)
- [CVE-2023-45234](https://insights.sbomify.com/CVE-2023-45234/): Buffer Overflow in EDK II Network Package (high 8.3)
- [CVE-2023-45235](https://insights.sbomify.com/CVE-2023-45235/): Buffer Overflow in EDK II Network Package (high 8.3)
- [CVE-2021-28210](https://insights.sbomify.com/CVE-2021-28210/): Denial of service in EDK II (high 7.8)
- [CVE-2017-5731](https://insights.sbomify.com/CVE-2017-5731/): Privilege escalation in Tianocore (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-14584 and fix it if it is affected.

What it is: CVE-2019-14584 is a high-severity vulnerability in Tianocore EDK2, published on 3 Jun 2021. 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-2019-14584 in the wild and no public exploit code.

Affected product: Tianocore EDK2. 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-2019-14584/ (Markdown: https://insights.sbomify.com/CVE-2019-14584/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-14584
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-14584
- OSV: https://osv.dev/vulnerability/CVE-2019-14584

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-14584/
Summaries are generated and may contain mistakes; the official description above is the record.