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ID

VAR-202104-0550


CVE

CVE-2021-0267


TITLE

Juniper Networks Junos OS and Junos OS Evolved Input validation error vulnerability

Trust: 0.6

sources: CNNVD: CNNVD-202104-1013

DESCRIPTION

An Improper Input Validation vulnerability in the active-lease query portion in JDHCPD's DHCP Relay Agent of Juniper Networks Junos OS allows an attacker to cause a Denial of Service (DoS) by sending a crafted DHCP packet to the device thereby crashing the jdhcpd DHCP service. This is typically configured for Broadband Subscriber Sessions. Continued receipt and processing of this crafted packet will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS: 19.4 versions prior to 19.4R3-S1; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R2. This issue does not affect Junos OS Evolved. 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. There is a security vulnerability in Junos OS, and there is no relevant information about this vulnerability at present, please pay attention to CNNVD or manufacturer announcements at any time

Trust: 1.08

sources: NVD: CVE-2021-0267 // VULHUB: VHN-372169 // VULMON: CVE-2021-0267

AFFECTED PRODUCTS

vendor:junipermodel:junosscope:eqversion:19.4

Trust: 1.0

vendor:junipermodel:junosscope:eqversion:20.1

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vendor:junipermodel:junosscope:eqversion:20.3

Trust: 1.0

vendor:junipermodel:junosscope:eqversion:20.2

Trust: 1.0

sources: NVD: CVE-2021-0267

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-0267
value: MEDIUM

Trust: 1.0

sirt@juniper.net: CVE-2021-0267
value: HIGH

Trust: 1.0

CNNVD: CNNVD-202104-1013
value: MEDIUM

Trust: 0.6

VULHUB: VHN-372169
value: LOW

Trust: 0.1

VULMON: CVE-2021-0267
value: MEDIUM

Trust: 0.1

nvd@nist.gov: CVE-2021-0267
severity: LOW
baseScore: 3.3
vectorString: AV:A/AC:L/AU:N/C:N/I:N/A:P
accessVector: ADJACENT_NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: PARTIAL
exploitabilityScore: 6.5
impactScore: 2.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.0

VULHUB: VHN-372169
severity: LOW
baseScore: 3.3
vectorString: AV:A/AC:L/AU:N/C:N/I:N/A:P
accessVector: ADJACENT_NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: PARTIAL
exploitabilityScore: 6.5
impactScore: 2.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.1

VULMON: CVE-2021-0267
severity: MEDIUM
baseScore: 5.0
vectorString: AV:N/AC:L/AU:N/C:N/I:N/A:P
accessVector: NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: PARTIAL
exploitabilityScore: 10.0
impactScore: 2.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.1

nvd@nist.gov: CVE-2021-0267
baseSeverity: MEDIUM
baseScore: 6.5
vectorString: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector: ADJACENT
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
exploitabilityScore: 2.8
impactScore: 3.6
version: 3.1

Trust: 1.0

sirt@juniper.net: CVE-2021-0267
baseSeverity: HIGH
baseScore: 7.4
vectorString: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
attackVector: ADJACENT
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: CHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
exploitabilityScore: 2.8
impactScore: 4.0
version: 3.1

Trust: 1.0

sources: VULHUB: VHN-372169 // VULMON: CVE-2021-0267 // CNNVD: CNNVD-202104-1013 // NVD: CVE-2021-0267 // NVD: CVE-2021-0267

PROBLEMTYPE DATA

problemtype:CWE-20

Trust: 1.1

sources: VULHUB: VHN-372169 // NVD: CVE-2021-0267

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202104-1013

TYPE

input validation error

Trust: 0.6

sources: CNNVD: CNNVD-202104-1013

PATCH

title:Juniper Networks Junos OS and Junos OS Evolved Enter the fix for the verification error vulnerabilityurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=148266

Trust: 0.6

sources: CNNVD: CNNVD-202104-1013

EXTERNAL IDS

db:JUNIPERid:JSA11158

Trust: 1.8

db:NVDid:CVE-2021-0267

Trust: 1.8

db:CNNVDid:CNNVD-202104-1013

Trust: 0.6

db:VULHUBid:VHN-372169

Trust: 0.1

db:VULMONid:CVE-2021-0267

Trust: 0.1

sources: VULHUB: VHN-372169 // VULMON: CVE-2021-0267 // CNNVD: CNNVD-202104-1013 // NVD: CVE-2021-0267

REFERENCES

url:https://kb.juniper.net/jsa11158

Trust: 1.8

url:https://www.juniper.net/documentation/us/en/software/junos/subscriber-mgmt-sessions/topics/ref/statement/active-leasequery-edit-forwarding-options.html

Trust: 1.8

url:https://vigilance.fr/vulnerability/junos-os-multiple-vulnerabilities-35081

Trust: 0.6

url:https://nvd.nist.gov/vuln/detail/cve-2021-0267

Trust: 0.6

url:https://cwe.mitre.org/data/definitions/20.html

Trust: 0.1

url:https://nvd.nist.gov

Trust: 0.1

sources: VULHUB: VHN-372169 // VULMON: CVE-2021-0267 // CNNVD: CNNVD-202104-1013 // NVD: CVE-2021-0267

SOURCES

db:VULHUBid:VHN-372169
db:VULMONid:CVE-2021-0267
db:CNNVDid:CNNVD-202104-1013
db:NVDid:CVE-2021-0267

LAST UPDATE DATE

2024-11-23T22:05:09.355000+00:00


SOURCES UPDATE DATE

db:VULHUBid:VHN-372169date:2021-07-23T00:00:00
db:VULMONid:CVE-2021-0267date:2021-04-28T00:00:00
db:CNNVDid:CNNVD-202104-1013date:2021-08-16T00:00:00
db:NVDid:CVE-2021-0267date:2024-11-21T05:42:21.583

SOURCES RELEASE DATE

db:VULHUBid:VHN-372169date:2021-04-22T00:00:00
db:VULMONid:CVE-2021-0267date:2021-04-22T00:00:00
db:CNNVDid:CNNVD-202104-1013date:2021-04-14T00:00:00
db:NVDid:CVE-2021-0267date:2021-04-22T20:15:09.910