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ID

VAR-202009-0569


CVE

CVE-2020-15787


TITLE

SIMATIC HMI Unified Comfort Panels  Authentication vulnerabilities in

Trust: 0.8

sources: JVNDB: JVNDB-2020-010871

DESCRIPTION

A vulnerability has been identified in SIMATIC HMI Unified Comfort Panels (All versions <= V16). Affected devices insufficiently validate authentication attempts as the information given can be truncated to match only a set number of characters versus the whole provided string. This could allow a remote attacker to discover user passwords and obtain access to the Sm@rt Server via a brute-force attack. SIMATIC HMI Unified Comfort Panels Contains an authentication vulnerability.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-2020-15787 // JVNDB: JVNDB-2020-010871 // CNVD: CNVD-2020-51238

IOT TAXONOMY

category:['ICS']sub_category: -

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sources: CNVD: CNVD-2020-51238

AFFECTED PRODUCTS

vendor:siemensmodel:simatic hmi united comfort panelsscope:eqversion:*

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vendor:siemensmodel:simatic hmi united comfort panelsscope: - version: -

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sources: CNVD: CNVD-2020-51238 // NVD: CVE-2020-15787

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2020-15787
value: CRITICAL

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NVD: CVE-2020-15787
value: CRITICAL

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CNVD: CNVD-2020-51238
value: MEDIUM

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CNNVD: CNNVD-202009-496
value: CRITICAL

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nvd@nist.gov: CVE-2020-15787
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

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CNVD: CNVD-2020-51238
severity: MEDIUM
baseScore: 5.0
vectorString: AV:N/AC:L/AU:N/C:N/I:P/A:N
accessVector: NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: NONE
integrityImpact: PARTIAL
availabilityImpact: NONE
exploitabilityScore: 10.0
impactScore: 2.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.6

nvd@nist.gov: CVE-2020-15787
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

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NVD: CVE-2020-15787
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-2020-51238 // JVNDB: JVNDB-2020-010871 // CNNVD: CNNVD-202009-496 // NVD: CVE-2020-15787

PROBLEMTYPE DATA

problemtype:CWE-305

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problemtype:CWE-287

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problemtype:Improper authentication (CWE-287) [NVD Evaluation ]

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sources: JVNDB: JVNDB-2020-010871 // NVD: CVE-2020-15787

THREAT TYPE

remote

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sources: CNNVD: CNNVD-202009-496

TYPE

authorization issue

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sources: CNNVD: CNNVD-202009-496

PATCH

title:SSA-542525url:https://cert-portal.siemens.com/productcert/pdf/ssa-542525.pdf

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title:Patch for Siemens SIMATIC HMI product authentication vulnerability (CNVD-2020-51238)url:https://www.cnvd.org.cn/patchInfo/show/233356

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title:Siemens SIMATIC HMI Repair measures for authentication vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=127917

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sources: CNVD: CNVD-2020-51238 // JVNDB: JVNDB-2020-010871 // CNNVD: CNNVD-202009-496

EXTERNAL IDS

db:NVDid:CVE-2020-15787

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db:SIEMENSid:SSA-542525

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db:ICS CERTid:ICSA-20-252-06

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db:JVNid:JVNVU94568336

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db:JVNDBid:JVNDB-2020-010871

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db:CNVDid:CNVD-2020-51238

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db:AUSCERTid:ESB-2020.3086

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db:CNNVDid:CNNVD-202009-496

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sources: CNVD: CNVD-2020-51238 // JVNDB: JVNDB-2020-010871 // CNNVD: CNNVD-202009-496 // NVD: CVE-2020-15787

REFERENCES

url:https://cert-portal.siemens.com/productcert/pdf/ssa-542525.pdf

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url:https://nvd.nist.gov/vuln/detail/cve-2020-15787

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url:https://us-cert.cisa.gov/ics/advisories/icsa-20-252-06

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url:https://jvn.jp/vu/jvnvu94568336/index.html

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url:https://vigilance.fr/vulnerability/siemens-simatic-hmi-privilege-escalation-33281

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url:https://www.auscert.org.au/bulletins/esb-2020.3086/

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sources: CNVD: CNVD-2020-51238 // JVNDB: JVNDB-2020-010871 // CNNVD: CNNVD-202009-496 // NVD: CVE-2020-15787

CREDITS

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

Trust: 0.6

sources: CNNVD: CNNVD-202009-496

SOURCES

db:CNVDid:CNVD-2020-51238
db:JVNDBid:JVNDB-2020-010871
db:CNNVDid:CNNVD-202009-496
db:NVDid:CVE-2020-15787

LAST UPDATE DATE

2024-08-14T12:36:26.355000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2020-51238date:2020-09-10T00:00:00
db:JVNDBid:JVNDB-2020-010871date:2022-03-11T06:04:00
db:CNNVDid:CNNVD-202009-496date:2021-06-09T00:00:00
db:NVDid:CVE-2020-15787date:2021-06-08T20:15:07.873

SOURCES RELEASE DATE

db:CNVDid:CNVD-2020-51238date:2020-09-10T00:00:00
db:JVNDBid:JVNDB-2020-010871date:2021-02-12T00:00:00
db:CNNVDid:CNNVD-202009-496date:2020-09-08T00:00:00
db:NVDid:CVE-2020-15787date:2020-09-09T19:15:19.990