CVE-2019-8556 Use after free in Safari
Processing maliciously crafted web content in Safari or related Apple software may lead to arbitrary code execution via a use-after-free vulnerability.
- 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
- None listed
What is CVE-2019-8556?
CVE-2019-8556 is a high-severity use after free vulnerability in Apple Icloud, 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 use after free issue was addressed with improved memory management. This issue is fixed in iOS 12.2, tvOS 12.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. Processing maliciously crafted web content may lead to arbitrary code execution.
Weakness: CWE-416
Which versions are affected by CVE-2019-8556?
It affects 5 products.
Products include Apple Icloud, Apple Iphone Os, Apple Itunes, Apple Safari, Apple Tvos.
How do I fix CVE-2019-8556?
No fix has been published for CVE-2019-8556 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2019-8556 being exploited?
There is no known exploitation of CVE-2019-8556 in the wild and no public exploit code.
Other vulnerabilities in Apple Icloud
Sources
Also known as GHSA-pgv5-pw9f-4x5j.