CVE-2018-4374 Cross-site scripting in iOS, watchOS, Safari, iTunes for Windows, iCloud for Windows

Medium 6.1 Published Updated

A logic issue in Apple iOS, watchOS, and Safari allowed cross-site scripting attacks, potentially enabling code execution or data theft.

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
None listed

What is CVE-2018-4374?

CVE-2018-4374 is a medium-severity cross-site scripting vulnerability in Apple Icloud, published on 3 Apr 2019. 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 logic issue was addressed with improved validation. This issue affected versions prior to iOS 12.1, watchOS 5.1, Safari 12.0.1, iTunes 12.9.1, iCloud for Windows 7.8.

Weakness: CWE-79

Which versions are affected by CVE-2018-4374?

It affects 5 products.

Products include Apple Icloud, Apple Iphone Os, Apple Itunes, Apple Safari, Apple Watchos.

How do I fix CVE-2018-4374?

No fix has been published for CVE-2018-4374 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2018-4374 being exploited?

There is no known exploitation of CVE-2018-4374 in the wild and no public exploit code.

All Apple Icloud vulnerabilities

Sources

Also known as GHSA-fr65-9gh3-8r3f.

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