Details of VAR-202101-0487

ID

VAR-202101-0487

CVE

CVE-2020-28395

TITLE

SCALANCE X-300 Vulnerability in using hard-coded credentials in switch families

Trust: 0.8

sources: JVNDB: JVNDB-2020-015530

DESCRIPTION

A vulnerability has been identified in SCALANCE X-200RNA switch family (All versions < V3.2.7), SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants) (All versions < V4.1.0). Devices do not create a new unique private key after factory reset. An attacker could leverage this situation to a man-in-the-middle situation and decrypt previously captured traffic. SCALANCE X is a switch used to connect industrial components, such as programmable logic controllers (plc) or human machine interfaces (HMIs)

Trust: 2.25

sources: NVD: CVE-2020-28395 // JVNDB: JVNDB-2020-015530 // CNVD: CNVD-2021-02592 // VULMON: CVE-2020-28395

IOT TAXONOMY

category:

['ICS']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2021-02592

AFFECTED PRODUCTS

vendor:	siemens	model:	scalance xr324-4m poe ts	scope:	lt	version:	4.1.0	Trust: 1.0
vendor:	siemens	model:	scalance xr326-2c poe wg	scope:	lt	version:	4.1.0	Trust: 1.0
vendor:	siemens	model:	scalance xr324-4m eec	scope:	lt	version:	4.1.0	Trust: 1.0
vendor:	siemens	model:	scalance xr328-4c wg	scope:	lt	version:	4.1.0	Trust: 1.0
vendor:	siemens	model:	scalance xr324wg	scope:	lt	version:	4.1.0	Trust: 1.0
vendor:	siemens	model:	scalance xr324-12m ts	scope:	lt	version:	4.1.0	Trust: 1.0
vendor:	siemens	model:	scalance xr324-12m	scope:	lt	version:	4.1.0	Trust: 1.0
vendor:	siemens	model:	scalance xr324-4m poe	scope:	lt	version:	4.1.0	Trust: 1.0
vendor:	シーメンス	model:	scalance xr324-4m poe	scope:	-	version:	-	Trust: 0.8
vendor:	シーメンス	model:	scalance xr324wg	scope:	-	version:	-	Trust: 0.8
vendor:	シーメンス	model:	scalance xr324-4m eec	scope:	-	version:	-	Trust: 0.8
vendor:	シーメンス	model:	scalance xr328-4c wg	scope:	-	version:	-	Trust: 0.8
vendor:	シーメンス	model:	scalance xr324-12m	scope:	-	version:	-	Trust: 0.8
vendor:	シーメンス	model:	scalance xr324-12m ts	scope:	-	version:	-	Trust: 0.8
vendor:	シーメンス	model:	scalance xr326-2c poe wg	scope:	-	version:	-	Trust: 0.8
vendor:	シーメンス	model:	scalance xr324-4m poe ts	scope:	-	version:	-	Trust: 0.8
vendor:	siemens	model:	scalance switch family	scope:	eq	version:	x-300x408<v4.1.0	Trust: 0.6

sources: CNVD: CNVD-2021-02592 // JVNDB: JVNDB-2020-015530 // NVD: CVE-2020-28395

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2020-28395
value:	MEDIUM
Trust: 1.0
NVD:	CVE-2020-28395
value:	MEDIUM
Trust: 0.8
CNVD:	CNVD-2021-02592
value:	HIGH
Trust: 0.6
CNNVD:	CNNVD-202101-830
value:	MEDIUM
Trust: 0.6
VULMON:	CVE-2020-28395
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2020-28395
severity:	MEDIUM
baseScore:	4.3
vectorString:	AV:N/AC:M/AU:N/C:P/I:N/A:N
accessVector:	NETWORK
accessComplexity:	MEDIUM
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	NONE
availabilityImpact:	NONE
exploitabilityScore:	8.6
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.9
CNVD:	CNVD-2021-02592
severity:	HIGH
baseScore:	9.4
vectorString:	AV:N/AC:L/AU:N/C:C/I:C/A:N
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	COMPLETE
integrityImpact:	COMPLETE
availabilityImpact:	NONE
exploitabilityScore:	10.0
impactScore:	9.2
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6

nvd@nist.gov:	CVE-2020-28395
baseSeverity:	MEDIUM
baseScore:	5.9
vectorString:	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
attackVector:	NETWORK
attackComplexity:	HIGH
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	NONE
availabilityImpact:	NONE
exploitabilityScore:	2.2
impactScore:	3.6
version:	3.1
Trust: 1.0
NVD:	CVE-2020-28395
baseSeverity:	MEDIUM
baseScore:	5.9
vectorString:	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
attackVector:	NETWORK
attackComplexity:	HIGH
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	NONE
availabilityImpact:	NONE
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: CNVD: CNVD-2021-02592 // VULMON: CVE-2020-28395 // JVNDB: JVNDB-2020-015530 // CNNVD: CNNVD-202101-830 // NVD: CVE-2020-28395

PROBLEMTYPE DATA

problemtype:	CWE-321	Trust: 1.0
problemtype:	CWE-798	Trust: 1.0
problemtype:	Using hardcoded credentials (CWE-798) [NVD Evaluation ]	Trust: 0.8

sources: JVNDB: JVNDB-2020-015530 // NVD: CVE-2020-28395

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202101-830

TYPE

trust management problem

Trust: 0.6

sources: CNNVD: CNNVD-202101-830

PATCH

title:	SSA-274900	url:	https://cert-portal.siemens.com/productcert/pdf/ssa-274900.pdf	Trust: 0.8
title:	Patch for Scalance X Products hard-coded encryption key vulnerability (CNVD-2021-02592)	url:	https://www.cnvd.org.cn/patchInfo/show/244012	Trust: 0.6
title:	Siemens SCALANCE Security vulnerabilities	url:	http://123.124.177.30/web/xxk/bdxqById.tag?id=139346	Trust: 0.6
title:	Siemens Security Advisories: Siemens Security Advisory	url:	https://vulmon.com/vendoradvisory?qidtp=siemens_security_advisories&qid=16f5b7ec974eee0b50172f47db7b7ec5	Trust: 0.1

sources: CNVD: CNVD-2021-02592 // VULMON: CVE-2020-28395 // JVNDB: JVNDB-2020-015530 // CNNVD: CNNVD-202101-830

EXTERNAL IDS

db:	NVD	id:	CVE-2020-28395	Trust: 3.1
db:	ICS CERT	id:	ICSA-21-012-02	Trust: 2.5
db:	SIEMENS	id:	SSA-274900	Trust: 2.3
db:	JVNDB	id:	JVNDB-2020-015530	Trust: 0.8
db:	CNVD	id:	CNVD-2021-02592	Trust: 0.6
db:	AUSCERT	id:	ESB-2021.0124	Trust: 0.6
db:	ZDI	id:	ZDI-21-061	Trust: 0.6
db:	CNNVD	id:	CNNVD-202101-830	Trust: 0.6
db:	VULMON	id:	CVE-2020-28395	Trust: 0.1

sources: CNVD: CNVD-2021-02592 // VULMON: CVE-2020-28395 // JVNDB: JVNDB-2020-015530 // CNNVD: CNNVD-202101-830 // NVD: CVE-2020-28395

REFERENCES

url:	https://us-cert.cisa.gov/ics/advisories/icsa-21-012-02	Trust: 3.1
url:	https://cert-portal.siemens.com/productcert/pdf/ssa-274900.pdf	Trust: 2.3
url:	https://nvd.nist.gov/vuln/detail/cve-2020-28395	Trust: 1.4
url:	https://www.zerodayinitiative.com/advisories/zdi-21-061/	Trust: 0.6
url:	https://www.auscert.org.au/bulletins/esb-2021.0124/	Trust: 0.6
url:	https://cwe.mitre.org/data/definitions/321.html	Trust: 0.1
url:	https://nvd.nist.gov	Trust: 0.1
url:	https://www.cisa.gov/uscert/ics/advisories/icsa-21-012-02	Trust: 0.1

sources: CNVD: CNVD-2021-02592 // VULMON: CVE-2020-28395 // JVNDB: JVNDB-2020-015530 // CNNVD: CNNVD-202101-830 // NVD: CVE-2020-28395

CREDITS

Siemens ProductCERT reported these vulnerabilities to CISA.

Trust: 0.6

sources: CNNVD: CNNVD-202101-830

SOURCES

db:	CNVD	id:	CNVD-2021-02592
db:	VULMON	id:	CVE-2020-28395
db:	JVNDB	id:	JVNDB-2020-015530
db:	CNNVD	id:	CNNVD-202101-830
db:	NVD	id:	CVE-2020-28395

LAST UPDATE DATE

2024-08-14T13:06:54.688000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2021-02592	date:	2021-02-04T00:00:00
db:	VULMON	id:	CVE-2020-28395	date:	2022-12-13T00:00:00
db:	JVNDB	id:	JVNDB-2020-015530	date:	2021-10-01T07:45:00
db:	CNNVD	id:	CNNVD-202101-830	date:	2022-12-14T00:00:00
db:	NVD	id:	CVE-2020-28395	date:	2022-12-13T17:15:13.577

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2021-02592	date:	2021-01-13T00:00:00
db:	VULMON	id:	CVE-2020-28395	date:	2021-01-12T00:00:00
db:	JVNDB	id:	JVNDB-2020-015530	date:	2021-10-01T00:00:00
db:	CNNVD	id:	CNNVD-202101-830	date:	2021-01-12T00:00:00
db:	NVD	id:	CVE-2020-28395	date:	2021-01-12T21:15:18.197