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ID

VAR-202107-0570


CVE

CVE-2021-21820


TITLE

D-LINK DIR-3040  Vulnerability in Using Hard Coded Credentials

Trust: 0.8

sources: JVNDB: JVNDB-2021-009662

DESCRIPTION

A hard-coded password vulnerability exists in the Libcli Test Environment functionality of D-LINK DIR-3040 1.13B03. A specially crafted network request can lead to code execution. An attacker can send a sequence of requests to trigger this vulnerability. D-LINK DIR-3040 Is vulnerable to the use of hard-coded credentials.Information is obtained, information is tampered with, and service is disrupted (DoS) It may be put into a state. D-Link DIR-3040 is a router of D-Link company in Taiwan. Provides the function of connecting to the network. No detailed vulnerability details are currently provided. Pillow is a Python-based image processing library. There is currently no information about this vulnerability, please feel free to follow CNNVD or manufacturer announcements

Trust: 2.79

sources: NVD: CVE-2021-21820 // JVNDB: JVNDB-2021-009662 // CNVD: CNVD-2021-52960 // CNNVD: CNNVD-202104-975 // VULMON: CVE-2021-21820

IOT TAXONOMY

category:['Network device']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2021-52960

AFFECTED PRODUCTS

vendor:dlinkmodel:dir-3040scope:eqversion:1.13b03

Trust: 1.0

vendor:d linkmodel:dir-3040scope:eqversion: -

Trust: 0.8

vendor:d linkmodel:dir-3040scope:eqversion:dir-3040 firmware 1.13b03

Trust: 0.8

vendor:dlinkmodel:d-link dir-3040 1.13b03scope: - version: -

Trust: 0.6

sources: CNVD: CNVD-2021-52960 // JVNDB: JVNDB-2021-009662 // NVD: CVE-2021-21820

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-21820
value: CRITICAL

Trust: 1.0

talos-cna@cisco.com: CVE-2021-21820
value: CRITICAL

Trust: 1.0

NVD: CVE-2021-21820
value: CRITICAL

Trust: 0.8

CNVD: CNVD-2021-52960
value: HIGH

Trust: 0.6

CNNVD: CNNVD-202104-975
value: MEDIUM

Trust: 0.6

CNNVD: CNNVD-202107-1124
value: CRITICAL

Trust: 0.6

VULMON: CVE-2021-21820
value: HIGH

Trust: 0.1

nvd@nist.gov: CVE-2021-21820
severity: HIGH
baseScore: 7.5
vectorString: AV:N/AC:L/AU:N/C:P/I:P/A:P
accessVector: NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: PARTIAL
exploitabilityScore: 10.0
impactScore: 6.4
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.9

CNVD: CNVD-2021-52960
severity: HIGH
baseScore: 10.0
vectorString: AV:N/AC:L/AU:N/C:C/I:C/A:C
accessVector: NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: COMPLETE
integrityImpact: COMPLETE
availabilityImpact: COMPLETE
exploitabilityScore: 10.0
impactScore: 10.0
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.6

nvd@nist.gov: CVE-2021-21820
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

talos-cna@cisco.com: CVE-2021-21820
baseSeverity: CRITICAL
baseScore: 10.0
vectorString: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: CHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 3.9
impactScore: 6.0
version: 3.0

Trust: 1.0

NVD: CVE-2021-21820
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-2021-52960 // VULMON: CVE-2021-21820 // JVNDB: JVNDB-2021-009662 // CNNVD: CNNVD-202104-975 // CNNVD: CNNVD-202107-1124 // NVD: CVE-2021-21820 // NVD: CVE-2021-21820

PROBLEMTYPE DATA

problemtype:CWE-798

Trust: 1.0

problemtype:Using hardcoded credentials (CWE-798) [NVD Evaluation ]

Trust: 0.8

sources: JVNDB: JVNDB-2021-009662 // NVD: CVE-2021-21820

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202107-1124

TYPE

other

Trust: 0.6

sources: CNNVD: CNNVD-202104-975

PATCH

title:Top Pageurl:https://www.dlink.com.br/

Trust: 0.8

title:Patch for D-LINK DIR-3040 Trust Management Vulnerabilityurl:https://www.cnvd.org.cn/patchInfo/show/280116

Trust: 0.6

title:D-LINK DIR-3040 Repair measures for trust management problem vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=156803

Trust: 0.6

sources: CNVD: CNVD-2021-52960 // JVNDB: JVNDB-2021-009662 // CNNVD: CNNVD-202107-1124

EXTERNAL IDS

db:NVDid:CVE-2021-21820

Trust: 3.9

db:TALOSid:TALOS-2021-1285

Trust: 3.1

db:JVNDBid:JVNDB-2021-009662

Trust: 0.8

db:CNVDid:CNVD-2021-52960

Trust: 0.6

db:CS-HELPid:SB2021041363

Trust: 0.6

db:CNNVDid:CNNVD-202104-975

Trust: 0.6

db:CS-HELPid:SB2021071610

Trust: 0.6

db:CNNVDid:CNNVD-202107-1124

Trust: 0.6

db:VULMONid:CVE-2021-21820

Trust: 0.1

sources: CNVD: CNVD-2021-52960 // VULMON: CVE-2021-21820 // JVNDB: JVNDB-2021-009662 // CNNVD: CNNVD-202104-975 // CNNVD: CNNVD-202107-1124 // NVD: CVE-2021-21820

REFERENCES

url:https://talosintelligence.com/vulnerability_reports/talos-2021-1285

Trust: 3.7

url:https://nvd.nist.gov/vuln/detail/cve-2021-21820

Trust: 0.8

url:https://www.cybersecurity-help.cz/vdb/sb2021041363

Trust: 0.6

url:https://www.cybersecurity-help.cz/vdb/sb2021071610

Trust: 0.6

url:https://cwe.mitre.org/data/definitions/798.html

Trust: 0.1

url:https://nvd.nist.gov

Trust: 0.1

sources: CNVD: CNVD-2021-52960 // VULMON: CVE-2021-21820 // JVNDB: JVNDB-2021-009662 // CNNVD: CNNVD-202104-975 // CNNVD: CNNVD-202107-1124 // NVD: CVE-2021-21820

CREDITS

Discovered by Dave McDaniel of Cisco Talos.

Trust: 0.6

sources: CNNVD: CNNVD-202107-1124

SOURCES

db:CNVDid:CNVD-2021-52960
db:VULMONid:CVE-2021-21820
db:JVNDBid:JVNDB-2021-009662
db:CNNVDid:CNNVD-202104-975
db:CNNVDid:CNNVD-202107-1124
db:NVDid:CVE-2021-21820

LAST UPDATE DATE

2024-08-14T12:51:08.125000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2021-52960date:2021-07-21T00:00:00
db:VULMONid:CVE-2021-21820date:2021-07-22T00:00:00
db:JVNDBid:JVNDB-2021-009662date:2022-05-17T02:23:00
db:CNNVDid:CNNVD-202104-975date:2021-04-14T00:00:00
db:CNNVDid:CNNVD-202107-1124date:2022-08-10T00:00:00
db:NVDid:CVE-2021-21820date:2022-07-29T14:54:26.580

SOURCES RELEASE DATE

db:CNVDid:CNVD-2021-52960date:2021-07-21T00:00:00
db:VULMONid:CVE-2021-21820date:2021-07-16T00:00:00
db:JVNDBid:JVNDB-2021-009662date:2022-05-17T00:00:00
db:CNNVDid:CNNVD-202104-975date:2021-04-13T00:00:00
db:CNNVDid:CNNVD-202107-1124date:2021-07-15T00:00:00
db:NVDid:CVE-2021-21820date:2021-07-16T11:15:10.037