# CVE-2018-1000205: Security feature bypass in n/a

> Attackers can bypass verified boot mechanisms in U-Boot by using specially crafted FIT images, compromising system integrity.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 26 Jun 2018
- **Updated:** 17 Sep 2024
- **Also known as:** DEBIAN-CVE-2018-1000205, GHSA-8frp-j862-qcw3, UBUNTU-CVE-2018-1000205

## What is CVE-2018-1000205?

CVE-2018-1000205 is a medium-severity vulnerability in n/a, published on 26 Jun 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

U-Boot contains a CWE-20: Improper Input Validation vulnerability in Verified boot signature validation that can result in Bypass verified boot. This attack appear to be exploitable via Specially crafted FIT image and special device memory functionality.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2018-1000205?

It affects 1 product.


Products: Denx U-Boot.

## How do I fix CVE-2018-1000205?

No fix has been published for CVE-2018-1000205 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-1000205 being exploited?

There is no known exploitation of CVE-2018-1000205 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2022-34835](https://insights.sbomify.com/CVE-2022-34835/): Integer overflow in n/a (critical 9.8)
- [CVE-2022-30767](https://insights.sbomify.com/CVE-2022-30767/): Memory corruption in n/a (critical 9.8)
- [CVE-2020-8432](https://insights.sbomify.com/CVE-2020-8432/): Use after free in n/a (critical 9.8)
- [CVE-2019-14192](https://insights.sbomify.com/CVE-2019-14192/): Integer overflow in n/a (critical 9.8)
- [CVE-2019-14193](https://insights.sbomify.com/CVE-2019-14193/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-1000205 and fix it if it is affected.

What it is: CVE-2018-1000205 is a medium-severity vulnerability in n/a, published on 26 Jun 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-1000205 in the wild and no public exploit code.

Affected product: n/a. 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-2018-1000205/ (Markdown: https://insights.sbomify.com/CVE-2018-1000205/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-1000205
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-1000205
- OSV: https://osv.dev/vulnerability/CVE-2018-1000205

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-1000205/
Summaries are generated and may contain mistakes; the official description above is the record.