CVE-2020-9876 Memory corruption in iCloud for Windows
Opening a malicious PDF can cause arbitrary code execution or app termination in Apple operating systems and related applications.
- 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-2020-9876?
CVE-2020-9876 is a high-severity memory corruption vulnerability in Apple Icloud, published on 22 Oct 2020. 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
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6, tvOS 13.4.8, watchOS 6.2.8, iTunes 12.10.8 for Windows, iCloud for Windows 11.3, iCloud for Windows 7.20. Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution.
Weakness: CWE-787
Which versions are affected by CVE-2020-9876?
It affects 8 products.
Products include Apple Icloud, Apple Ipados, Apple Iphone Os, Apple Itunes, Apple Mac Os X, Apple Macos and 2 more.
How do I fix CVE-2020-9876?
No fix has been published for CVE-2020-9876 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-2020-9876 being exploited?
There is no known exploitation of CVE-2020-9876 in the wild and no public exploit code.
Other vulnerabilities in Apple Icloud
Sources
Also known as GHSA-r5xx-rrgx-p246.