CVE-2016-1761

Apple OS X XML Double Free Remote Code Execution Vulnerability

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

libxml2 in Apple iOS before 9.3, OS X before 10.11.4, and watchOS before 2.2 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted XML document.

libxml2 en Apple iOS en versiones anteriores a 9.3, OS X en versiones anteriores a 10.11.4 y watchOS en versiones anteriores a 2.2 permite a atacantes remotos ejecutar código arbitrario o causar una denegación de servicio (corrupción de memoria) a través de un documento XML manipulado.

This vulnerability allows remote 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 XML files. The issue lies in the handling of ENTITY declarations that reference unsupported protocols. An attacker can leverage this vulnerability to execute code under the context of the current process.

*Credits: wol0xff

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

Attack Vector

Network

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

2016-01-13 CVE Reserved
2016-03-22 CVE Published
2024-08-05 CVE Updated
2025-01-12 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 (8)

URL	Tag	Source
http://www.securitytracker.com/id/1035353	Vdb Entry
http://www.zerodayinitiative.com/advisories/ZDI-16-203	X_refsource_misc

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.apple.com/archives/security-announce/2016/Mar/msg00000.html	2016-12-03
http://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html	2016-12-03
http://lists.apple.com/archives/security-announce/2016/Mar/msg00004.html	2016-12-03
https://support.apple.com/HT206166	2016-12-03
https://support.apple.com/HT206167	2016-12-03
https://support.apple.com/HT206168	2016-12-03

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"				<= 9.2.1 Search vendor "Apple" for product "Iphone Os" and version " <= 9.2.1"		-		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				<= 10.11.3 Search vendor "Apple" for product "Mac Os X" and version " <= 10.11.3"		-		Affected
Apple Search vendor "Apple"		Watchos Search vendor "Apple" for product "Watchos"				<= 2.1 Search vendor "Apple" for product "Watchos" and version " <= 2.1"		-		Affected