CVE-2019-8591 Memory corruption in iOS
An attacker can exploit a type confusion flaw to write kernel memory or crash the system, requiring OS updates to mitigate.
- 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
- None listed
What is CVE-2019-8591?
CVE-2019-8591 is a high-severity memory corruption vulnerability in Apple Iphone Os, published on 18 Dec 2019. 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
A type confusion issue was addressed with improved memory handling. This issue is fixed in iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, watchOS 5.2.1. An application may be able to cause unexpected system termination or write kernel memory.
Weakness: CWE-843
Which versions are affected by CVE-2019-8591?
It affects 4 products.
Products include Apple Iphone Os, Apple Mac Os X, Apple Tvos, Apple Watchos.
How do I fix CVE-2019-8591?
No fix has been published for CVE-2019-8591 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2019-8591 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-8591 exists.
Public exploit code: 1 Exploit-DB entry and 1 proofs of concept on GitHub.
Other vulnerabilities in Apple Iphone Os
Sources
Also known as GHSA-3fv9-r273-qjc2.