# CVE-2019-14559: Denial of service in Extensible Firmware Interface Development Kit (EDK II)

> Uncontrolled resource consumption in EDK II allows unauthenticated attackers to cause denial of service via network access.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 23 Nov 2020
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2019-14559, GHSA-5cmc-7w2j-jpj5, RHSA-2020:4805, SUSE-SU-2020:1065-1, SUSE-SU-2020:1125-1, UBUNTU-CVE-2019-14559, openSUSE-SU-2020:0622-1

## What is CVE-2019-14559?

CVE-2019-14559 is a high-severity denial of service vulnerability in Extensible Firmware Interface Development Kit (EDK II), published on 23 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Uncontrolled resource consumption in EDK II may allow an unauthenticated user to potentially enable denial of service via network access.

Weakness: CWE-401 (Missing Release of Memory after Effective Lifetime)

## Which versions are affected by CVE-2019-14559?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `edk2` | Red Hat:enterprise_linux:8::appstream | All versions | 0:20200602gitca407c7246bf-3.el8 |
| `edk2-aarch64` | Red Hat:enterprise_linux:8::appstream | All versions | 0:20200602gitca407c7246bf-3.el8 |
| `edk2-ovmf` | Red Hat:enterprise_linux:8::appstream | All versions | 0:20200602gitca407c7246bf-3.el8 |
| `ovmf` | SUSE:Linux Enterprise Module for Server Applications 15 SP1 | All versions | 2017+git1510945757.b2662641d5-5.32.3 |
| `ovmf` | SUSE:Linux Enterprise Server 12 SP4 | All versions | 2017+git1510945757.b2662641d5-3.26.1 |
| `ovmf` | SUSE:Linux Enterprise Server 12 SP5 | All versions | 2017+git1510945757.b2662641d5-3.26.1 |
| `ovmf` | SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 2017+git1510945757.b2662641d5-3.26.1 |
| `ovmf` | SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 2017+git1510945757.b2662641d5-3.26.1 |
| `ovmf` | openSUSE:Leap 15.1 | All versions | 2017+git1510945757.b2662641d5-lp151.11.6.1 |

Products: Tianocore Edk2.

## How do I fix CVE-2019-14559?

Apply the vendor's patch.

## Is CVE-2019-14559 being exploited?

There is no known exploitation of CVE-2019-14559 in the wild and no public exploit code.

## Other vulnerabilities in Extensible Firmware Interface Development Kit (EDK II)

- [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-2019-14584](https://insights.sbomify.com/CVE-2019-14584/): Null dereference in Tianocore EDK2 (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-14559 and fix it if it is affected.

What it is: CVE-2019-14559 is a high-severity denial of service vulnerability in Extensible Firmware Interface Development Kit (EDK II), published on 23 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-14559 in the wild and no public exploit code.

Affected product: Extensible Firmware Interface Development Kit (EDK II). 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-2019-14559/ (Markdown: https://insights.sbomify.com/CVE-2019-14559/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-14559
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-14559
- OSV: https://osv.dev/vulnerability/CVE-2019-14559

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-14559/
Summaries are generated and may contain mistakes; the official description above is the record.