Details of VAR-201607-0375

ID

VAR-201607-0375

CVE

CVE-2016-4638

TITLE

Apple OS X Vulnerabilities in which the login window of Windows can gain privileges

Trust: 0.8

sources: JVNDB: JVNDB-2016-004015

DESCRIPTION

Login Window in Apple OS X before 10.11.6 allows attackers to gain privileges via a crafted app that leverages a "type confusion.". By interacting with _XSetApplicationBindingsForWorkspaces, an attacker can cause a type confusion condition. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.The specific flaw exists within the CoreGraphics module. The issue lies in the failure to properly validate user-supplied data which can result in a type confusion condition. An attacker can leverage this vulnerability to escalate privileges under the context of WindowServer. Apple Mac OS X is prone to multiple security vulnerabilities. Attackers can exploit these issues to execute arbitrary code, gain sensitive information, cause denial-of-service conditions, bypass security restrictions, and perform unauthorized actions. This may aid in other attacks. Apple Mac OS X 10.9.5, 10.10.5 and 10.11 through 10.11.5 are vulnerable. Login Window is one of the login window components

Trust: 3.24

sources: NVD: CVE-2016-4638 // JVNDB: JVNDB-2016-004015 // ZDI: ZDI-16-640 // ZDI: ZDI-16-639 // BID: 91824 // VULHUB: VHN-93457

AFFECTED PRODUCTS

vendor:	apple	model:	os x	scope:	-	version:	-	Trust: 1.4
vendor:	apple	model:	mac os x	scope:	lte	version:	10.11.5	Trust: 1.0
vendor:	apple	model:	mac os x	scope:	eq	version:	10.11 and later	Trust: 0.8
vendor:	apple	model:	mac os x	scope:	eq	version:	10.11.5	Trust: 0.6
vendor:	apple	model:	mac os	scope:	eq	version:	x10.11.3	Trust: 0.3
vendor:	apple	model:	mac os	scope:	eq	version:	x10.11.2	Trust: 0.3
vendor:	apple	model:	mac os	scope:	eq	version:	x10.11.1	Trust: 0.3
vendor:	apple	model:	mac os	scope:	eq	version:	x10.10.5	Trust: 0.3
vendor:	apple	model:	mac os	scope:	eq	version:	x10.9.5	Trust: 0.3
vendor:	apple	model:	mac os	scope:	eq	version:	x10.11.5	Trust: 0.3
vendor:	apple	model:	mac os	scope:	eq	version:	x10.11.4	Trust: 0.3
vendor:	apple	model:	mac os	scope:	eq	version:	x10.11	Trust: 0.3
vendor:	apple	model:	mac os	scope:	ne	version:	x10.11.6	Trust: 0.3
vendor:	apple	model:	mac os security update	scope:	ne	version:	x2016	Trust: 0.3

sources: ZDI: ZDI-16-640 // ZDI: ZDI-16-639 // BID: 91824 // JVNDB: JVNDB-2016-004015 // CNNVD: CNNVD-201607-890 // NVD: CVE-2016-4638

CVSS

SEVERITY

CVSSV2

CVSSV3

ZDI:	CVE-2016-4638
value:	MEDIUM
Trust: 1.4
nvd@nist.gov:	CVE-2016-4638
value:	HIGH
Trust: 1.0
NVD:	CVE-2016-4638
value:	HIGH
Trust: 0.8
CNNVD:	CNNVD-201607-890
value:	CRITICAL
Trust: 0.6
VULHUB:	VHN-93457
value:	HIGH
Trust: 0.1

nvd@nist.gov:	CVE-2016-4638
severity:	HIGH
baseScore:	9.3
vectorString:	AV:N/AC:M/AU:N/C:C/I:C/A:C
accessVector:	NETWORK
accessComplexity:	MEDIUM
authentication:	NONE
confidentialityImpact:	COMPLETE
integrityImpact:	COMPLETE
availabilityImpact:	COMPLETE
exploitabilityScore:	8.6
impactScore:	10.0
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.8
ZDI:	CVE-2016-4638
severity:	MEDIUM
baseScore:	4.4
vectorString:	AV:L/AC:M/AU:N/C:P/I:P/A:P
accessVector:	LOCAL
accessComplexity:	MEDIUM
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	3.4
impactScore:	6.4
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.4
VULHUB:	VHN-93457
severity:	HIGH
baseScore:	9.3
vectorString:	AV:N/AC:M/AU:N/C:C/I:C/A:C
accessVector:	NETWORK
accessComplexity:	MEDIUM
authentication:	NONE
confidentialityImpact:	COMPLETE
integrityImpact:	COMPLETE
availabilityImpact:	COMPLETE
exploitabilityScore:	8.6
impactScore:	10.0
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.1

nvd@nist.gov:	CVE-2016-4638
baseSeverity:	HIGH
baseScore:	7.8
vectorString:	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
attackVector:	LOCAL
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	REQUIRED
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	1.8
impactScore:	5.9
version:	3.0
Trust: 1.8

sources: ZDI: ZDI-16-640 // ZDI: ZDI-16-639 // VULHUB: VHN-93457 // JVNDB: JVNDB-2016-004015 // CNNVD: CNNVD-201607-890 // NVD: CVE-2016-4638

PROBLEMTYPE DATA

problemtype:

CWE-264

Trust: 1.9

sources: VULHUB: VHN-93457 // JVNDB: JVNDB-2016-004015 // NVD: CVE-2016-4638

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-201607-890

TYPE

permissions and access control

Trust: 0.6

sources: CNNVD: CNNVD-201607-890

CONFIGURATIONS

sources: JVNDB: JVNDB-2016-004015

PATCH

title:	HT206903	url:	https://support.apple.com/en-us/HT206903	Trust: 2.2
title:	Apple security updates	url:	https://support.apple.com/en-us/HT201222	Trust: 0.8
title:	APPLE-SA-2016-07-18-1 OS X El Capitan v10.11.6 and Security Update 2016-004	url:	http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html	Trust: 0.8
title:	HT206903	url:	https://support.apple.com/ja-jp/HT206903	Trust: 0.8
title:	Apple OS X Login Window Security vulnerabilities	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=63250	Trust: 0.6

sources: ZDI: ZDI-16-640 // ZDI: ZDI-16-639 // JVNDB: JVNDB-2016-004015 // CNNVD: CNNVD-201607-890

EXTERNAL IDS

db:	NVD	id:	CVE-2016-4638	Trust: 4.2
db:	BID	id:	91824	Trust: 1.4
db:	SECTRACK	id:	1036348	Trust: 1.1
db:	ZDI	id:	ZDI-16-431	Trust: 0.9
db:	JVN	id:	JVNVU94844193	Trust: 0.8
db:	JVNDB	id:	JVNDB-2016-004015	Trust: 0.8
db:	ZDI_CAN	id:	ZDI-CAN-3775	Trust: 0.7
db:	ZDI	id:	ZDI-16-640	Trust: 0.7
db:	ZDI_CAN	id:	ZDI-CAN-3773	Trust: 0.7
db:	ZDI	id:	ZDI-16-639	Trust: 0.7
db:	CNNVD	id:	CNNVD-201607-890	Trust: 0.7
db:	ZDI	id:	ZDI-16-496	Trust: 0.3
db:	ZDI	id:	ZDI-16-437	Trust: 0.3
db:	ZDI	id:	ZDI-16-435	Trust: 0.3
db:	VULHUB	id:	VHN-93457	Trust: 0.1

sources: ZDI: ZDI-16-640 // ZDI: ZDI-16-639 // VULHUB: VHN-93457 // BID: 91824 // JVNDB: JVNDB-2016-004015 // CNNVD: CNNVD-201607-890 // NVD: CVE-2016-4638

REFERENCES

url:	http://lists.apple.com/archives/security-announce/2016/jul/msg00000.html	Trust: 1.7
url:	https://support.apple.com/ht206903	Trust: 1.7
url:	https://support.apple.com/en-us/ht206903	Trust: 1.4
url:	http://www.securityfocus.com/bid/91824	Trust: 1.1
url:	http://www.securitytracker.com/id/1036348	Trust: 1.1
url:	http://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2016-4638	Trust: 0.8
url:	http://jvn.jp/vu/jvnvu94844193/index.html	Trust: 0.8
url:	http://web.nvd.nist.gov/view/vuln/detail?vulnid=cve-2016-4638	Trust: 0.8
url:	http://zerodayinitiative.com/advisories/zdi-16-431/	Trust: 0.6
url:	https://www.apple.com/	Trust: 0.3
url:	http://www.apple.com/macosx/	Trust: 0.3
url:	http://www.zerodayinitiative.com/advisories/zdi-16-431/	Trust: 0.3
url:	http://www.zerodayinitiative.com/advisories/zdi-16-435/	Trust: 0.3
url:	http://www.zerodayinitiative.com/advisories/zdi-16-437/	Trust: 0.3
url:	apple os x acmp4aacbasedecoder out-of-bounds read information disclosure vulnerability	Trust: 0.3
url:	http://www.zerodayinitiative.com/advisories/zdi-16-496/	Trust: 0.3

sources: ZDI: ZDI-16-640 // ZDI: ZDI-16-639 // VULHUB: VHN-93457 // BID: 91824 // JVNDB: JVNDB-2016-004015 // CNNVD: CNNVD-201607-890 // NVD: CVE-2016-4638

CREDITS

e048b7039acc9483d42ca9ef197bd909

Trust: 1.4

sources: ZDI: ZDI-16-640 // ZDI: ZDI-16-639

SOURCES

db:	ZDI	id:	ZDI-16-640
db:	ZDI	id:	ZDI-16-639
db:	VULHUB	id:	VHN-93457
db:	BID	id:	91824
db:	JVNDB	id:	JVNDB-2016-004015
db:	CNNVD	id:	CNNVD-201607-890
db:	NVD	id:	CVE-2016-4638

LAST UPDATE DATE

2025-04-13T21:46:22.717000+00:00

SOURCES UPDATE DATE

db:	ZDI	id:	ZDI-16-640	date:	2016-12-15T00:00:00
db:	ZDI	id:	ZDI-16-639	date:	2016-12-15T00:00:00
db:	VULHUB	id:	VHN-93457	date:	2017-09-01T00:00:00
db:	BID	id:	91824	date:	2016-08-29T19:00:00
db:	JVNDB	id:	JVNDB-2016-004015	date:	2016-07-28T00:00:00
db:	CNNVD	id:	CNNVD-201607-890	date:	2016-07-26T00:00:00
db:	NVD	id:	CVE-2016-4638	date:	2025-04-12T10:46:40.837

SOURCES RELEASE DATE

db:	ZDI	id:	ZDI-16-640	date:	2016-12-15T00:00:00
db:	ZDI	id:	ZDI-16-639	date:	2016-12-15T00:00:00
db:	VULHUB	id:	VHN-93457	date:	2016-07-22T00:00:00
db:	BID	id:	91824	date:	2016-07-18T00:00:00
db:	JVNDB	id:	JVNDB-2016-004015	date:	2016-07-28T00:00:00
db:	CNNVD	id:	CNNVD-201607-890	date:	2016-07-26T00:00:00
db:	NVD	id:	CVE-2016-4638	date:	2016-07-22T02:59:58.760