apple ios CVE-2016-4656 is a vulnerability in Apple iOS
Published on August 25, 2016

The kernel in Apple iOS before 9.3.5 allows attackers to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app.

Vendor Advisory Vendor Advisory NVD

Known Exploited Vulnerability

This Apple iOS Memory Corruption Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. A memory corruption vulnerability in Apple iOS kernel allows attackers to execute code in a privileged context or cause a denial-of-service via a crafted application.

The following remediation steps are recommended / required by June 14, 2022: Apply updates per vendor instructions.

Vulnerability Analysis

CVE-2016-4656 is exploitable with local system access, requires user interaction. This vulnerability is considered to have a low attack complexity. It has an exploitability score of 1.8 out of four. The potential impact of an exploit of this vulnerability is considered to be very high.

What is a Memory Corruption Vulnerability?

The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.

CVE-2016-4656 has been classified to as a Memory Corruption vulnerability or weakness.


Products Associated with CVE-2016-4656

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Apple iOS
 

What versions of iOS are vulnerable to CVE-2016-4656?