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ID

VAR-202101-1885


CVE

CVE-2021-0211


TITLE

Juniper Networks Junos OS  and  Junos OS Evolved Routing Protocol Daemon  Exceptional state check vulnerability in service

Trust: 0.8

sources: JVNDB: JVNDB-2021-002498

DESCRIPTION

An improper check for unusual or exceptional conditions in Juniper Networks Junos OS and Junos OS Evolved Routing Protocol Daemon (RPD) service allows an attacker to send a valid BGP FlowSpec message thereby causing an unexpected change in the route advertisements within the BGP FlowSpec domain leading to disruptions in network traffic causing a Denial of Service (DoS) condition. Continued receipt of these update messages will cause a sustained Denial of Service condition. This issue affects Juniper Networks: Junos OS: All versions prior to 17.3R3-S10 with the exceptions of 15.1X49-D240 on SRX Series and 15.1R7-S8 on EX Series; 17.3 versions prior to 17.3R3-S10; 17.4 versions prior to 17.4R2-S12, 17.4R3-S4; 18.1 versions prior to 18.1R3-S12; 18.2 versions prior to 18.2R2-S8, 18.2R3-S6; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R1-S8, 18.4R2-S6, 18.4R3-S6; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S3; 19.2 versions prior to 19.2R3-S1; 19.3 versions prior to 19.3R2-S5, 19.3R3-S1; 19.4 versions prior to 19.4R1-S3, 19.4R2-S3, 19.4R3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R1-S3 20.2R2; 20.3 versions prior to 20.3R1-S1, 20.3R2. Junos OS Evolved: All versions prior to 20.3R1-S1-EVO, 20.3R2-EVO. Juniper Networks Junos OS is a set of network operating system of Juniper Networks (Juniper Networks) dedicated to the company's hardware equipment. The operating system provides a secure programming interface and Junos SDK

Trust: 1.71

sources: NVD: CVE-2021-0211 // JVNDB: JVNDB-2021-002498 // VULHUB: VHN-372113

AFFECTED PRODUCTS

vendor:junipermodel:junosscope:eqversion:20.1

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vendor:junipermodel:junosscope:eqversion:18.2

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vendor:junipermodel:junos os evolvedscope:eqversion:20.1

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vendor:junipermodel:junosscope:eqversion:20.2

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vendor:junipermodel:junosscope:eqversion:18.3

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vendor:junipermodel:junos os evolvedscope:eqversion:20.2

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vendor:junipermodel:junosscope:eqversion:17.3

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vendor:junipermodel:junosscope:eqversion:17.4

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vendor:junipermodel:junosscope:eqversion:15.1x49-d140

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vendor:junipermodel:junosscope:eqversion:15.1x49-d30

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vendor:junipermodel:junosscope:eqversion:15.1x49

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vendor:junipermodel:junosscope:eqversion:15.1x49-d60

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vendor:junipermodel:junosscope:eqversion:19.2

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vendor:junipermodel:junosscope:eqversion:15.1x49-d160

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vendor:junipermodel:junosscope:eqversion:20.3

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vendor:junipermodel:junos os evolvedscope:eqversion:19.2

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vendor:junipermodel:junosscope:eqversion:15.1x49-d150

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vendor:junipermodel:junos os evolvedscope:eqversion:20.3

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vendor:junipermodel:junosscope:eqversion:18.4

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vendor:junipermodel:junosscope:eqversion:19.3

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vendor:junipermodel:junosscope:eqversion:19.4

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vendor:junipermodel:junosscope:eqversion:19.1

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vendor:junipermodel:junos os evolvedscope:eqversion:19.3

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vendor:junipermodel:junos os evolvedscope:eqversion:19.4

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vendor:junipermodel:junosscope:eqversion:18.1

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vendor:junipermodel:junosscope:eqversion:15.1

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vendor:ジュニパーネットワークスmodel:junos osscope:eqversion: -

Trust: 0.8

vendor:ジュニパーネットワークスmodel:junos osscope: - version: -

Trust: 0.8

sources: JVNDB: JVNDB-2021-002498 // NVD: CVE-2021-0211

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-0211
value: MEDIUM

Trust: 1.0

sirt@juniper.net: CVE-2021-0211
value: CRITICAL

Trust: 1.0

NVD: CVE-2021-0211
value: CRITICAL

Trust: 0.8

CNNVD: CNNVD-202101-1114
value: CRITICAL

Trust: 0.6

VULHUB: VHN-372113
value: MEDIUM

Trust: 0.1

nvd@nist.gov: CVE-2021-0211
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: 1.8

VULHUB: VHN-372113
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: 0.1

sirt@juniper.net: CVE-2021-0211
baseSeverity: CRITICAL
baseScore: 10.0
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: CHANGED
confidentialityImpact: NONE
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 3.9
impactScore: 5.8
version: 3.1

Trust: 1.0

OTHER: JVNDB-2021-002498
baseSeverity: CRITICAL
baseScore: 10.0
vectorString: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: CHANGED
confidentialityImpact: NONE
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: VULHUB: VHN-372113 // JVNDB: JVNDB-2021-002498 // CNNVD: CNNVD-202101-1114 // NVD: CVE-2021-0211 // NVD: CVE-2021-0211

PROBLEMTYPE DATA

problemtype:CWE-754

Trust: 1.1

problemtype:Improper checking in exceptional conditions (CWE-754) [NVD Evaluation ]

Trust: 0.8

sources: VULHUB: VHN-372113 // JVNDB: JVNDB-2021-002498 // NVD: CVE-2021-0211

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202101-1114

TYPE

code problem

Trust: 0.6

sources: CNNVD: CNNVD-202101-1114

PATCH

title:JSA11101url:https://kb.juniper.net/JSA11101

Trust: 0.8

title:Juniper Networks Junos OS Security vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=139555

Trust: 0.6

sources: JVNDB: JVNDB-2021-002498 // CNNVD: CNNVD-202101-1114

EXTERNAL IDS

db:NVDid:CVE-2021-0211

Trust: 2.5

db:JUNIPERid:JSA11101

Trust: 1.7

db:JVNDBid:JVNDB-2021-002498

Trust: 0.8

db:CNNVDid:CNNVD-202101-1114

Trust: 0.7

db:AUSCERTid:ESB-2021.0176

Trust: 0.6

db:VULHUBid:VHN-372113

Trust: 0.1

sources: VULHUB: VHN-372113 // JVNDB: JVNDB-2021-002498 // CNNVD: CNNVD-202101-1114 // NVD: CVE-2021-0211

REFERENCES

url:https://kb.juniper.net/jsa11101

Trust: 1.7

url:https://nvd.nist.gov/vuln/detail/cve-2021-0211

Trust: 1.4

url:https://www.auscert.org.au/bulletins/esb-2021.0176/

Trust: 0.6

url:https://vigilance.fr/vulnerability/junos-os-denial-of-service-via-bgp-flowspec-message-34331

Trust: 0.6

sources: VULHUB: VHN-372113 // JVNDB: JVNDB-2021-002498 // CNNVD: CNNVD-202101-1114 // NVD: CVE-2021-0211

SOURCES

db:VULHUBid:VHN-372113
db:JVNDBid:JVNDB-2021-002498
db:CNNVDid:CNNVD-202101-1114
db:NVDid:CVE-2021-0211

LAST UPDATE DATE

2024-11-23T22:25:12.118000+00:00


SOURCES UPDATE DATE

db:VULHUBid:VHN-372113date:2022-01-18T00:00:00
db:JVNDBid:JVNDB-2021-002498date:2021-09-17T07:55:00
db:CNNVDid:CNNVD-202101-1114date:2021-01-25T00:00:00
db:NVDid:CVE-2021-0211date:2024-11-21T05:42:12.897

SOURCES RELEASE DATE

db:VULHUBid:VHN-372113date:2021-01-15T00:00:00
db:JVNDBid:JVNDB-2021-002498date:2021-09-17T00:00:00
db:CNNVDid:CNNVD-202101-1114date:2021-01-13T00:00:00
db:NVDid:CVE-2021-0211date:2021-01-15T18:15:15.167