CVE-2020-9947 Use after free in Safari
Processing maliciously crafted web content in Safari may lead to arbitrary code execution due to 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
- Available
What is CVE-2020-9947?
CVE-2020-9947 is a high-severity use after free vulnerability in Apple Icloud, published on 8 Dec 2020. 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 watchOS 7.0, iOS 14.0 and iPadOS 14.0, iTunes for Windows 12.10.9, iCloud for Windows 11.5, tvOS 14.0, Safari 14.0. Processing maliciously crafted web content may lead to arbitrary code execution.
Weakness: CWE-416
Which versions are affected by CVE-2020-9947?
It affects 7 products.
Products include Apple Icloud, Apple Ipados, Apple Iphone Os, Apple Itunes, Apple Safari, Apple Tvos and 1 more.
How do I fix CVE-2020-9947?
Upgrade to a fixed version.
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-2020-9947 being exploited?
There is no known exploitation of CVE-2020-9947 in the wild and no public exploit code.
Other vulnerabilities in Apple Icloud
Sources
Also known as DEBIAN-CVE-2020-9947, GHSA-xvmv-wg5c-7x3w, UBUNTU-CVE-2020-9947.