# CVE-2018-4172: Security feature bypass in n/a

> Physically proximate attackers can bypass the iCloud password requirement to disable Find My iPhone via backup restore vectors.

- **Severity:** Medium 4.6 (`CVSS:3.0/AV:P/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 Apr 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-hc47-w9jf-cv4v

## What is CVE-2018-4172?

CVE-2018-4172 is a medium-severity vulnerability in Apple Iphone Os, published on 3 Apr 2018. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An issue was discovered in certain Apple products. iOS before 11.3 is affected. The issue involves the "Find My iPhone" component. It allows physically proximate attackers to bypass the iCloud password requirement for disabling the "Find My iPhone" feature via vectors involving a backup restore.

## Which versions are affected by CVE-2018-4172?

It affects 1 product.


Products: Apple Iphone Os.

## How do I fix CVE-2018-4172?

No fix has been published for CVE-2018-4172 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-4172 being exploited?

There is no known exploitation of CVE-2018-4172 in the wild and no public exploit code.

## Other vulnerabilities in Apple Iphone Os

- [CVE-2021-30666](https://insights.sbomify.com/CVE-2021-30666/): Apple iOS WebKit Buffer Overflow (high 8.8, exploited in the wild)
- [CVE-2021-30761](https://insights.sbomify.com/CVE-2021-30761/): Apple iOS WebKit Memory Corruption (high 8.8, exploited in the wild)
- [CVE-2021-30762](https://insights.sbomify.com/CVE-2021-30762/): Apple iOS WebKit Use-After-Free (high 8.8, exploited in the wild)
- [CVE-2016-4657](https://insights.sbomify.com/CVE-2016-4657/): Apple iOS Webkit Memory Corruption (high 8.8, exploited in the wild)
- [CVE-2019-7286](https://insights.sbomify.com/CVE-2019-7286/): Apple Multiple Products Memory Corruption (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-4172 and fix it if it is affected.

What it is: CVE-2018-4172 is a medium-severity vulnerability in Apple Iphone Os, published on 3 Apr 2018. 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-2018-4172 in the wild and no public exploit code.

Affected product: Apple Iphone Os. 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-2018-4172/ (Markdown: https://insights.sbomify.com/CVE-2018-4172/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-4172
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-4172
- OSV: https://osv.dev/vulnerability/CVE-2018-4172

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-4172/
Summaries are generated and may contain mistakes; the official description above is the record.