CVE-2016-4657 Apple iOS Webkit Memory Corruption

Exploited in the wild High 8.8 Published Updated

Remote attackers can execute arbitrary code or cause denial of service via a crafted website due to memory corruption in WebKit on iOS.

Exploited in the wild
Since 24 May 2022
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2016-4657?

CVE-2016-4657 is a high-severity memory corruption vulnerability in Apple Iphone Os, published on 25 Aug 2016. 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

WebKit in Apple iOS before 9.3.5 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.

Weakness: CWE-787

Which versions are affected by CVE-2016-4657?

It affects 1 product.

Products include Apple Iphone Os.

How do I fix CVE-2016-4657?

Upgrade to a fixed version. US federal agencies must fix it by 14 Jun 2022.

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

Is CVE-2016-4657 being exploited?

Yes. Attackers have exploited CVE-2016-4657 in the wild since at least 24 May 2022.

Public exploit code: 1 Metasploit module, 2 Exploit-DB entries and 3 proofs of concept on GitHub.

All Apple Iphone Os vulnerabilities

Sources

Also known as GHSA-99xm-29ff-vvqm, UBUNTU-CVE-2016-4657.

Is CVE-2016-4657 in your software?

Upload an SBOM and sbomify checks it against every vulnerability here, every day.

Check your SBOMs for free