CVE-2016-4657

Apple iOS Webkit Memory Corruption Vulnerability

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

Yes

*KEV

Decision

Act

*SSVC

Descriptions

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.

WebKit en Apple iOS en versiones anteriores a 9.3.5 permite a atacantes remotos ejecutar código arbitrario o provocar una denegación de servicio (corrupción de memoria) a través de un sitio web manipulado.

A large number of security issues were discovered in the WebKitGTK+ Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution.

Apple iOS WebKit contains a memory corruption vulnerability that allows attackers to execute remote code or cause a denial-of-service (DoS) via a crafted web site. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:Act

Exploitation

Active

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2016-05-11 CVE Reserved
2016-08-25 CVE Published
2017-03-12 First Exploit
2022-05-24 Exploited in Wild
2022-06-14 KEV Due Date
2024-12-17 EPSS Updated
2025-01-29 CVE Updated

CWE

CWE-787: Out-of-bounds Write

CAPEC

References (20)

URL	Tag	Source
http://www.securityfocus.com/bid/92653	Broken Link
http://www.securitytracker.com/id/1036694	Broken Link
https://blog.lookout.com/blog/2016/08/25/trident-pegasus	Broken Link
https://blog.lookout.com/trident-pegasus
https://citizenlab.ca/2016/08/million-dollar-dissident-iphone-zero-day-nso-group-uae
https://www.blackhat.com/docs/eu-16/materials/eu-16-Bazaliy-Mobile-Espionage-in-the-Wild-Pegasus-and-Nation-State-Level-Attacks.pdf
https://github.com/Siguza/PhoenixNonce
https://jndok.github.io/2016/10/04/pegasus-writeup
https://sektioneins.de/en/blog/16-09-02-pegasus-ios-kernel-vulnerability-explained.html
https://github.com/benjamin-42/Trident
http://blog.tihmstar.net/2018/01/modern-post-exploitation-techniques.html

URL	Date	SRC
https://packetstorm.news/files/id/148041	2018-06-04
https://www.exploit-db.com/exploits/44213	2017-03-12
https://www.exploit-db.com/exploits/44836	2025-01-29
https://github.com/Mimoja/CVE-2016-4657-NintendoSwitch	2017-03-15
https://github.com/iDaN5x/Switcheroo	2024-10-29
https://github.com/viai957/webkit-vulnerability	2024-07-16
https://www.youtube.com/watch?v=xkdPjbaLngE	2025-01-29

URL	Date	SRC

URL	Date	SRC
http://lists.apple.com/archives/security-announce/2016/Aug/msg00000.html	2024-07-02
https://support.apple.com/HT207107	2024-07-02

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apple Search vendor "Apple"		Iphone Os Search vendor "Apple" for product "Iphone Os"				< 9.3.5 Search vendor "Apple" for product "Iphone Os" and version " < 9.3.5"		-		Affected