CVE-2016-4641

Apple OS X WindowServer Type Confusion Privilege Escalation Vulnerability

Severity Score

7.3

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Login Window in Apple OS X before 10.11.6 allows attackers to execute arbitrary code in a privileged context or obtain sensitive user information via a crafted app that leverages a "type confusion."

Login Window en Apple OS X en versiones anteriores a 10.11.6 permite a atacantes ejecutar código arbitrario en un contexto privilegiado u obtener información sensible de usuario a través de una aplicación manipulada que aprovecha una "confusión de tipo".

This vulnerability allows local attackers to execute arbitrary code on vulnerable installations of Apple OS X. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within CoreGraphics. By interacting with _XSetDictionaryForCurrentSession, an attacker can cause a type confusion condition. An attacker could leverage this vulnerability to execute arbitrary code under the context of the WindowServer.

*Credits: aca055c25829115b84ad07e72a4eff16

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-05-11 CVE Reserved
2016-07-20 CVE Published
2024-08-06 CVE Updated
2024-08-21 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (5)

URL	Tag	Source
http://www.securityfocus.com/bid/91824	Vdb Entry
http://www.securitytracker.com/id/1036348	Vdb Entry
http://zerodayinitiative.com/advisories/ZDI-16-433	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html	2017-09-01
https://support.apple.com/HT206903	2017-09-01

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				<= 10.11.5 Search vendor "Apple" for product "Mac Os X" and version " <= 10.11.5"		-		Affected