CVE-2018-4233 Memory corruption in n/a

What is CVE-2018-4233?

CVE-2018-4233 is a high-severity memory corruption vulnerability in Apple Icloud, published on 8 Jun 2018. 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

An issue was discovered in certain Apple products. iOS before 11.4 is affected. Safari before 11.1.1 is affected. iCloud before 7.5 on Windows is affected. iTunes before 12.7.5 on Windows is affected. tvOS before 11.4 is affected. watchOS before 4.3.1 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site.

Weakness: CWE-119

Which versions are affected by CVE-2018-4233?

It affects 7 products.

Products include Apple Icloud, Apple Iphone Os, Apple Itunes, Apple Safari, Apple Tvos, Apple Watchos and 1 more.

How do I fix CVE-2018-4233?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2018-4233 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-4233 exists.

Public exploit code: 2 Metasploit modules, 1 Exploit-DB entry and 1 proofs of concept on GitHub.

Other vulnerabilities in Apple Icloud

• CVE-2019-8506 Apple Multiple Products Type Confusion Exploited High 8.8
• CVE-2020-27932 Apple Multiple Products Type Confusion Exploited High 7.8
• CVE-2019-8746 Memory corruption in iOS Critical 9.8
• CVE-2019-8749 Memory corruption in iOS Critical 9.8
• CVE-2019-8756 Memory corruption in iOS Critical 9.8

All Apple Icloud vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2018-4233, GHSA-h77p-7p3g-477f, UBUNTU-CVE-2018-4233.