CVE-2016-4647

Apple OS X DspFuncLib Use-After-Free Privilege Escalation Vulnerability

Severity Score

7.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Audio in Apple OS X before 10.11.6 allows local users to gain privileges or cause a denial of service (memory corruption) via a crafted file.

Audio en Apple OS X en versiones anteriores a 10.11.6 permite a usuarios locales obtener privilegios o provocar una denegación de servicio (corrupción de memoria) a través de un archivo manipulado.

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 the handling of DspFuncLib. The issue lies in the failure to remove a reference after freeing an object. An attacker can leverage this vulnerability to escalate privileges and execute code under the context of the kernel.

*Credits: Juwei Lin of Trend Micro

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* 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-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (6)

URL	Tag	Source
http://www.securityfocus.com/bid/91824	Vdb Entry
http://www.securitytracker.com/id/1036348	Vdb Entry
http://zerodayinitiative.com/advisories/ZDI-16-437	Third Party Advisory
http://zerodayinitiative.com/advisories/ZDI-16-438	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