CVE-2021-30762 Apple iOS WebKit Use-After-Free
Attackers can execute arbitrary code by tricking users into visiting malicious web content on iOS devices.
- Exploited in the wild
- Since 3 Nov 2021
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-30762?
CVE-2021-30762 is a high-severity use after free 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
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 12.5.4. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..
Weakness: CWE-416
Which versions are affected by CVE-2021-30762?
It affects 1 product.
Products include Apple Iphone Os.
How do I fix CVE-2021-30762?
Apply the vendor's patch. US federal agencies must fix it by 17 Nov 2021.
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-2021-30762 being exploited?
Yes. Attackers have exploited CVE-2021-30762 in the wild since at least 3 Nov 2021.
Other vulnerabilities in Apple Iphone Os
Sources
Also known as DEBIAN-CVE-2021-30762, GHSA-gj4g-95xx-7pc7, UBUNTU-CVE-2021-30762.