CVE-2018-4321 Security feature bypass in iOS, macOS, tvOS

What is CVE-2018-4321?

CVE-2018-4321 is a medium-severity vulnerability in Apple Iphone Os, published on 3 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A validation issue existed in the entitlement verification. This issue was addressed with improved validation of the process entitlement. This issue affected versions prior to iOS 12, macOS Mojave 10.14, tvOS 12.

Weakness: CWE-20

Which versions are affected by CVE-2018-4321?

It affects 3 products.

Products include Apple Iphone Os, Apple Mac Os X, Apple Tvos.

How do I fix CVE-2018-4321?

No fix has been published for CVE-2018-4321 yet. Limit exposure of the affected software until one is available.

Is CVE-2018-4321 being exploited?

There is no known exploitation of CVE-2018-4321 in the wild and no public exploit code.

Other vulnerabilities in Apple Iphone Os

• CVE-2021-30666 Apple iOS WebKit Buffer Overflow Exploited High 8.8
• CVE-2021-30761 Apple iOS WebKit Memory Corruption Exploited High 8.8
• CVE-2021-30762 Apple iOS WebKit Use-After-Free Exploited High 8.8
• CVE-2016-4657 Apple iOS Webkit Memory Corruption Exploited High 8.8
• CVE-2019-7286 Apple Multiple Products Memory Corruption Exploited High 7.8

All Apple Iphone Os vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-2cp8-mv48-5393.