CVE-2021-30799 Memory corruption in Security Update - Catalina
Attackers can execute arbitrary code by tricking users into visiting malicious web content on affected Apple operating systems.
- 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-2021-30799?
CVE-2021-30799 is a high-severity memory corruption vulnerability in Apple Iphone Os, published on 8 Sep 2021. 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
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave. Processing maliciously crafted web content may lead to arbitrary code execution.
Weakness: CWE-787
Which versions are affected by CVE-2021-30799?
It affects 3 products.
Products include Apple Iphone Os, Apple Mac Os X, Apple Macos.
How do I fix CVE-2021-30799?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-30799 being exploited?
There is no known exploitation of CVE-2021-30799 in the wild and no public exploit code.
Other vulnerabilities in Apple Iphone Os
Sources
Also known as DEBIAN-CVE-2021-30799, GHSA-rh3c-99q9-27v6, UBUNTU-CVE-2021-30799.