Details of VAR-202009-0568

ID

VAR-202009-0568

CVE

CVE-2020-15786

TITLE

Vulnerability in improperly limiting excessive authentication attempts in multiple Siemens products

Trust: 0.8

sources: JVNDB: JVNDB-2020-010869

DESCRIPTION

A vulnerability has been identified in SIMATIC HMI Basic Panels 2nd Generation (incl. SIPLUS variants) (All versions < V16), SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions <= V16), SIMATIC HMI Mobile Panels (All versions <= V16), SIMATIC HMI Unified Comfort Panels (All versions <= V16). Affected devices insufficiently block excessive authentication attempts. This could allow a remote attacker to discover user passwords and obtain access to the Sm@rt Server via a brute-force attack. Several Siemens products are vulnerable to improper restrictions on excessive authentication attempts.Information is obtained, information is tampered with, and service is disrupted (DoS) It may be put into a state. Siemens SIMATIC HMI panels are used to control and monitor HMI software for machines and equipment. Siemens SIMATIC HMI products have security vulnerabilities

Trust: 2.16

sources: NVD: CVE-2020-15786 // JVNDB: JVNDB-2020-010869 // CNVD: CNVD-2020-51239

IOT TAXONOMY

category:

['ICS']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2020-51239

AFFECTED PRODUCTS

vendor:	siemens	model:	simatic hmi united comfort panels	scope:	eq	version:	*	Trust: 1.0
vendor:	siemens	model:	simatic hmi mobile panels	scope:	eq	version:	*	Trust: 1.0
vendor:	siemens	model:	simatic hmi basic panels 2nd generation	scope:	lte	version:	14	Trust: 1.0
vendor:	siemens	model:	simatic hmi comfort panels	scope:	eq	version:	*	Trust: 1.0
vendor:	シーメンス	model:	simatic hmi basic panels 2nd generation	scope:	-	version:	-	Trust: 0.8
vendor:	シーメンス	model:	simatic hmi unified comfort panels	scope:	-	version:	-	Trust: 0.8
vendor:	シーメンス	model:	simatic hmi comfort panels	scope:	-	version:	-	Trust: 0.8
vendor:	シーメンス	model:	simatic hmi mobile panels	scope:	-	version:	-	Trust: 0.8
vendor:	siemens	model:	simatic hmi mobile panels	scope:	-	version:	-	Trust: 0.6
vendor:	siemens	model:	simatic hmi comfort panels	scope:	-	version:	-	Trust: 0.6
vendor:	siemens	model:	simatic hmi basic panels 2nd generation	scope:	-	version:	-	Trust: 0.6

sources: CNVD: CNVD-2020-51239 // JVNDB: JVNDB-2020-010869 // NVD: CVE-2020-15786

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2020-15786
value:	CRITICAL
Trust: 1.0
NVD:	CVE-2020-15786
value:	CRITICAL
Trust: 0.8
CNVD:	CNVD-2020-51239
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202009-498
value:	CRITICAL
Trust: 0.6

nvd@nist.gov:	CVE-2020-15786
severity:	MEDIUM
baseScore:	5.0
vectorString:	AV:N/AC:L/AU:N/C:P/I:N/A:N
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	NONE
availabilityImpact:	NONE
exploitabilityScore:	10.0
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.8
CNVD:	CNVD-2020-51239
severity:	MEDIUM
baseScore:	6.4
vectorString:	AV:N/AC:L/AU:N/C:N/I:P/A:P
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	NONE
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	10.0
impactScore:	4.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6

nvd@nist.gov:	CVE-2020-15786
baseSeverity:	CRITICAL
baseScore:	9.8
vectorString:	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	3.9
impactScore:	5.9
version:	3.1
Trust: 1.0
NVD:	CVE-2020-15786
baseSeverity:	CRITICAL
baseScore:	9.8
vectorString:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: CNVD: CNVD-2020-51239 // JVNDB: JVNDB-2020-010869 // CNNVD: CNNVD-202009-498 // NVD: CVE-2020-15786

PROBLEMTYPE DATA

problemtype:	CWE-307	Trust: 1.0
problemtype:	Inappropriate restriction of excessive authentication attempts (CWE-307) [NVD Evaluation ]	Trust: 0.8

sources: JVNDB: JVNDB-2020-010869 // NVD: CVE-2020-15786

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202009-498

TYPE

other

Trust: 0.6

sources: CNNVD: CNNVD-202009-498

PATCH

title:	SSA-542525	url:	https://cert-portal.siemens.com/productcert/pdf/ssa-542525.pdf	Trust: 0.8
title:	Patch for Siemens SIMATIC HMI product authentication vulnerability	url:	https://www.cnvd.org.cn/patchInfo/show/233353	Trust: 0.6
title:	Siemens SIMATIC HMI Security vulnerabilities	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=127919	Trust: 0.6

sources: CNVD: CNVD-2020-51239 // JVNDB: JVNDB-2020-010869 // CNNVD: CNNVD-202009-498

EXTERNAL IDS

db:	NVD	id:	CVE-2020-15786	Trust: 3.8
db:	SIEMENS	id:	SSA-542525	Trust: 2.2
db:	ICS CERT	id:	ICSA-20-252-06	Trust: 1.4
db:	JVN	id:	JVNVU94568336	Trust: 0.8
db:	JVNDB	id:	JVNDB-2020-010869	Trust: 0.8
db:	CNVD	id:	CNVD-2020-51239	Trust: 0.6
db:	AUSCERT	id:	ESB-2020.3086	Trust: 0.6
db:	CNNVD	id:	CNNVD-202009-498	Trust: 0.6

sources: CNVD: CNVD-2020-51239 // JVNDB: JVNDB-2020-010869 // CNNVD: CNNVD-202009-498 // NVD: CVE-2020-15786

REFERENCES

url:	https://cert-portal.siemens.com/productcert/pdf/ssa-542525.pdf	Trust: 2.2
url:	https://nvd.nist.gov/vuln/detail/cve-2020-15786	Trust: 1.4
url:	https://jvn.jp/vu/jvnvu94568336/index.html	Trust: 0.8
url:	https://www.cisa.gov/uscert/ics/advisories/icsa-20-252-06	Trust: 0.8
url:	https://vigilance.fr/vulnerability/siemens-simatic-hmi-privilege-escalation-33281	Trust: 0.6
url:	https://us-cert.cisa.gov/ics/advisories/icsa-20-252-06	Trust: 0.6
url:	https://www.auscert.org.au/bulletins/esb-2020.3086/	Trust: 0.6

sources: CNVD: CNVD-2020-51239 // JVNDB: JVNDB-2020-010869 // CNNVD: CNNVD-202009-498 // NVD: CVE-2020-15786

CREDITS

Joseph Gardiner from Bristol Cyber Security Group, reported these vulnerabilities to Siemens., University of Bristol

Trust: 0.6

sources: CNNVD: CNNVD-202009-498

SOURCES

db:	CNVD	id:	CNVD-2020-51239
db:	JVNDB	id:	JVNDB-2020-010869
db:	CNNVD	id:	CNNVD-202009-498
db:	NVD	id:	CVE-2020-15786

LAST UPDATE DATE

2024-08-14T12:08:37.277000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2020-51239	date:	2020-09-10T00:00:00
db:	JVNDB	id:	JVNDB-2020-010869	date:	2022-03-11T06:04:00
db:	CNNVD	id:	CNNVD-202009-498	date:	2021-08-12T00:00:00
db:	NVD	id:	CVE-2020-15786	date:	2021-06-08T20:15:07.767

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2020-51239	date:	2020-09-10T00:00:00
db:	JVNDB	id:	JVNDB-2020-010869	date:	2021-02-12T00:00:00
db:	CNNVD	id:	CNNVD-202009-498	date:	2020-09-08T00:00:00
db:	NVD	id:	CVE-2020-15786	date:	2020-09-09T19:15:19.787