# CVE-2019-8562: Memory corruption in Safari

> A memory corruption flaw allows sandboxed processes to bypass restrictions, potentially leading to privilege escalation or code execution on Apple devices.

- **Severity:** Critical 9.6 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 18 Dec 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-5qc4-qvx4-264m

## What is CVE-2019-8562?

CVE-2019-8562 is a critical memory corruption vulnerability in Apple Iphone Os, published on 18 Dec 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A memory corruption issue was addressed with improved validation. This issue is fixed in iOS 12.2, tvOS 12.2, Safari 12.1, iTunes 12.9.4 for Windows. A sandboxed process may be able to circumvent sandbox restrictions.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2019-8562?

It affects 4 products.


Products: Apple Iphone Os, Apple Itunes, Apple Safari, Apple Tvos.

## How do I fix CVE-2019-8562?

No fix has been published for CVE-2019-8562 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-8562 being exploited?

There is no known exploitation of CVE-2019-8562 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-2019-8562 and fix it if it is affected.

What it is: CVE-2019-8562 is a critical memory corruption vulnerability in Apple Iphone Os, published on 18 Dec 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-8562 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-2019-8562/ (Markdown: https://insights.sbomify.com/CVE-2019-8562/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-8562
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-8562
- OSV: https://osv.dev/vulnerability/CVE-2019-8562

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-8562/
Summaries are generated and may contain mistakes; the official description above is the record.