Details of VAR-202006-1643

ID

VAR-202006-1643

CVE

CVE-2020-9855

TITLE

macOS Catalina In symlinks Vulnerability of processing verification deficiency

Trust: 0.8

sources: JVNDB: JVNDB-2020-006281

DESCRIPTION

A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks. This issue is fixed in macOS Catalina 10.15.5. A local attacker may be able to elevate their privileges. macOS Catalina Due to a flaw in the verification of symbolic links symlinks There is a processing verification vulnerability.A local attacker could elevate privileges. Apple macOS Catalina is a set of dedicated operating systems developed by Apple for Mac computers. Find My is one of the components that supports tracking the location of Apple devices. A security vulnerability exists in the Find My component of Apple macOS Catalina versions prior to 10.15.5

Trust: 1.71

sources: NVD: CVE-2020-9855 // JVNDB: JVNDB-2020-006281 // VULHUB: VHN-187980

AFFECTED PRODUCTS

vendor:	apple	model:	mac os x	scope:	lt	version:	10.15.5	Trust: 1.0
vendor:	apple	model:	mac os x	scope:	eq	version:	10.15.4	Trust: 0.8

sources: JVNDB: JVNDB-2020-006281 // NVD: CVE-2020-9855

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2020-9855
value:	HIGH
Trust: 1.0
NVD:	JVNDB-2020-006281
value:	HIGH
Trust: 0.8
CNNVD:	CNNVD-202005-1299
value:	HIGH
Trust: 0.6
VULHUB:	VHN-187980
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2020-9855
severity:	MEDIUM
baseScore:	4.6
vectorString:	AV:L/AC:L/AU:N/C:P/I:P/A:P
accessVector:	LOCAL
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	3.9
impactScore:	6.4
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.0
NVD:	JVNDB-2020-006281
severity:	MEDIUM
baseScore:	4.6
vectorString:	AV:L/AC:L/AU:N/C:P/I:P/A:P
accessVector:	LOCAL
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	NONE
impactScore:	NONE
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.8
VULHUB:	VHN-187980
severity:	MEDIUM
baseScore:	4.6
vectorString:	AV:L/AC:L/AU:N/C:P/I:P/A:P
accessVector:	LOCAL
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	3.9
impactScore:	6.4
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.1

nvd@nist.gov:	CVE-2020-9855
baseSeverity:	HIGH
baseScore:	7.8
vectorString:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
attackVector:	LOCAL
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	1.8
impactScore:	5.9
version:	3.1
Trust: 1.0
NVD:	JVNDB-2020-006281
baseSeverity:	HIGH
baseScore:	7.8
vectorString:	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
attackVector:	LOCAL
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: VULHUB: VHN-187980 // JVNDB: JVNDB-2020-006281 // CNNVD: CNNVD-202005-1299 // NVD: CVE-2020-9855

PROBLEMTYPE DATA

problemtype:

CWE-20

Trust: 1.9

sources: VULHUB: VHN-187980 // JVNDB: JVNDB-2020-006281 // NVD: CVE-2020-9855

THREAT TYPE

local

Trust: 0.6

sources: CNNVD: CNNVD-202005-1299

TYPE

input validation error

Trust: 0.6

sources: CNNVD: CNNVD-202005-1299

CONFIGURATIONS

sources: JVNDB: JVNDB-2020-006281

PATCH

title:	HT211170	url:	https://support.apple.com/en-us/HT211170	Trust: 0.8
title:	HT211170	url:	https://support.apple.com/ja-jp/HT211170	Trust: 0.8
title:	Apple macOS Catalina Find My Fixes for component input validation error vulnerabilities	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=121262	Trust: 0.6

sources: JVNDB: JVNDB-2020-006281 // CNNVD: CNNVD-202005-1299

EXTERNAL IDS

db:	NVD	id:	CVE-2020-9855	Trust: 2.5
db:	JVN	id:	JVNVU98042162	Trust: 0.8
db:	JVNDB	id:	JVNDB-2020-006281	Trust: 0.8
db:	CNNVD	id:	CNNVD-202005-1299	Trust: 0.7
db:	NSFOCUS	id:	48624	Trust: 0.6
db:	AUSCERT	id:	ESB-2020.1859	Trust: 0.6
db:	CNVD	id:	CNVD-2020-34642	Trust: 0.1
db:	VULHUB	id:	VHN-187980	Trust: 0.1

sources: VULHUB: VHN-187980 // JVNDB: JVNDB-2020-006281 // CNNVD: CNNVD-202005-1299 // NVD: CVE-2020-9855

REFERENCES

url:	https://support.apple.com/ht211170	Trust: 1.7
url:	https://nvd.nist.gov/vuln/detail/cve-2020-9855	Trust: 1.4
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2020-9855	Trust: 0.8
url:	http://jvn.jp/vu/jvnvu98042162/index.html	Trust: 0.8
url:	http://www.nsfocus.net/vulndb/48624	Trust: 0.6
url:	https://support.apple.com/en-us/ht211170	Trust: 0.6
url:	https://www.auscert.org.au/bulletins/esb-2020.1859/	Trust: 0.6
url:	https://vigilance.fr/vulnerability/apple-macos-multiple-vulnerabilities-32343	Trust: 0.6
url:	https://support.apple.com/kb/ht211170	Trust: 0.6

sources: VULHUB: VHN-187980 // JVNDB: JVNDB-2020-006281 // CNNVD: CNNVD-202005-1299 // NVD: CVE-2020-9855

CREDITS

Zhongcheng Li(CK01) of Topsec Alpha Team

Trust: 0.6

sources: CNNVD: CNNVD-202005-1299

SOURCES

db:	VULHUB	id:	VHN-187980
db:	JVNDB	id:	JVNDB-2020-006281
db:	CNNVD	id:	CNNVD-202005-1299
db:	NVD	id:	CVE-2020-9855

LAST UPDATE DATE

2024-11-23T20:08:19.434000+00:00

SOURCES UPDATE DATE

db:	VULHUB	id:	VHN-187980	date:	2020-06-11T00:00:00
db:	JVNDB	id:	JVNDB-2020-006281	date:	2020-07-06T00:00:00
db:	CNNVD	id:	CNNVD-202005-1299	date:	2021-10-29T00:00:00
db:	NVD	id:	CVE-2020-9855	date:	2024-11-21T05:41:25.010

SOURCES RELEASE DATE

db:	VULHUB	id:	VHN-187980	date:	2020-06-09T00:00:00
db:	JVNDB	id:	JVNDB-2020-006281	date:	2020-07-06T00:00:00
db:	CNNVD	id:	CNNVD-202005-1299	date:	2020-05-26T00:00:00
db:	NVD	id:	CVE-2020-9855	date:	2020-06-09T17:15:15.363