CVE-2020-9893 Use after free in Safari
A remote attacker can trigger a use-after-free vulnerability to cause application crashes or execute arbitrary code on affected Apple devices.
- 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-2020-9893?
CVE-2020-9893 is a high-severity use after free vulnerability in Apple Icloud, published on 16 Oct 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 iOS 13.6 and iPadOS 13.6, tvOS 13.4.8, watchOS 6.2.8, Safari 13.1.2, iTunes 12.10.8 for Windows, iCloud for Windows 11.3, iCloud for Windows 7.20. A remote attacker may be able to cause unexpected application termination or arbitrary code execution.
Weakness: CWE-416
Which versions are affected by CVE-2020-9893?
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-2020-9893?
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-2020-9893 being exploited?
There is no known exploitation of CVE-2020-9893 in the wild and no public exploit code.
Other vulnerabilities in Apple Icloud
Sources
Also known as DEBIAN-CVE-2020-9893, GHSA-8m3c-93m2-83h7, UBUNTU-CVE-2020-9893.