# CVE-2018-12178: Memory corruption in Extensible Firmware Interface Development Kit (EDK II)

> A buffer overflow in the EDK II network stack allows unprivileged users to escalate privileges or cause denial of service via network access.

- **Severity:** Critical 9.1 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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:** 27 Mar 2019
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2018-12178, GHSA-85f7-wwh2-8hrc, UBUNTU-CVE-2018-12178

## What is CVE-2018-12178?

CVE-2018-12178 is a critical memory corruption vulnerability in Extensible Firmware Interface Development Kit (EDK II), published on 27 Mar 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Buffer overflow in network stack for EDK II may allow unprivileged user to potentially enable escalation of privilege and/or denial of service via network.

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

## Which versions are affected by CVE-2018-12178?

It affects 1 product.


Products: Tianocore Edk Ii.

## How do I fix CVE-2018-12178?

Apply the vendor's patch.

## Is CVE-2018-12178 being exploited?

There is no known exploitation of CVE-2018-12178 in the wild and no public exploit code.

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

- [CVE-2021-28216](https://insights.sbomify.com/CVE-2021-28216/): Memory corruption in EDK II (high 7.8)
- [CVE-2018-12179](https://insights.sbomify.com/CVE-2018-12179/): Privilege escalation in Extensible Firmware Interface Development Kit (EDK II) (high 7.8)
- [CVE-2018-3613](https://insights.sbomify.com/CVE-2018-3613/): Privilege escalation in Extensible Firmware Interface Development Kit (EDK II) (high 7.8)
- [CVE-2019-11098](https://insights.sbomify.com/CVE-2019-11098/): Other in Tianocore (medium 6.8)
- [CVE-2018-12183](https://insights.sbomify.com/CVE-2018-12183/): Memory corruption in Extensible Firmware Interface Development Kit (EDK II) (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-12178 and fix it if it is affected.

What it is: CVE-2018-12178 is a critical memory corruption vulnerability in Extensible Firmware Interface Development Kit (EDK II), published on 27 Mar 2019. 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-2018-12178 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-2018-12178/ (Markdown: https://insights.sbomify.com/CVE-2018-12178/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-12178
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-12178
- OSV: https://osv.dev/vulnerability/CVE-2018-12178

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-12178/
Summaries are generated and may contain mistakes; the official description above is the record.