# CVE-2018-4367: Memory corruption in iOS

> A memory corruption vulnerability in iOS allows attackers to execute arbitrary code via improved input validation flaws.

- **Severity:** Critical 9.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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:** No
- **Published:** 3 Apr 2019
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-xm84-45f4-g8g6

## What is CVE-2018-4367?

CVE-2018-4367 is a critical memory corruption vulnerability in Apple Iphone Os, published on 3 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A memory corruption issue was addressed with improved input validation. This issue affected versions prior to iOS 12.1.

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

## Which versions are affected by CVE-2018-4367?

It affects 1 product.


Products: Apple Iphone Os.

## How do I fix CVE-2018-4367?

No fix has been published for CVE-2018-4367 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-4367 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-4367 exists.

Public exploit code:

- FaceTime - 'readSPSandGetDecoderParams' Stack Corruption (exploitdb)

## 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-2018-4367 and fix it if it is affected.

What it is: CVE-2018-4367 is a critical memory corruption vulnerability in Apple Iphone Os, published on 3 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-4367 exists.

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-2018-4367/ (Markdown: https://insights.sbomify.com/CVE-2018-4367/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-4367
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-4367
- OSV: https://osv.dev/vulnerability/CVE-2018-4367

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-4367/
Summaries are generated and may contain mistakes; the official description above is the record.