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ID

VAR-202108-1372


CVE

CVE-2021-39509


TITLE

D-Link DIR-816 DIR-816A2_FW  Command injection vulnerability in

Trust: 0.8

sources: JVNDB: JVNDB-2021-011104

DESCRIPTION

An issue was discovered in D-Link DIR-816 DIR-816A2_FWv1.10CNB05_R1B011D88210 The HTTP request parameter is used in the handler function of /goform/form2userconfig.cgi route, which can construct the user name string to delete the user function. This can lead to command injection through shell metacharacters. D-Link DIR-816 DIR-816A2_FW Contains a command injection vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. D-Link DIR-816 is a wireless router made by D-Link in Taiwan. D-Link DIR-816 has a security vulnerability, which can be exploited by attackers to execute arbitrary php code through the typename parameter

Trust: 2.25

sources: NVD: CVE-2021-39509 // JVNDB: JVNDB-2021-011104 // CNVD: CNVD-2021-67516 // VULMON: CVE-2021-39509

IOT TAXONOMY

category:['Network device']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2021-67516

AFFECTED PRODUCTS

vendor:dlinkmodel:dir-816scope:eqversion:1.10cnb05_r1b011d88210

Trust: 1.0

vendor:d linkmodel:dir-816scope: - version: -

Trust: 0.8

vendor:d linkmodel:dir-816scope:eqversion: -

Trust: 0.8

vendor:d linkmodel:dir-816scope:eqversion:dir-816 firmware

Trust: 0.8

vendor:d linkmodel:dir-816l v1.10cnb05 r1b011d88210scope: - version: -

Trust: 0.6

sources: CNVD: CNVD-2021-67516 // JVNDB: JVNDB-2021-011104 // NVD: CVE-2021-39509

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-39509
value: CRITICAL

Trust: 1.0

NVD: CVE-2021-39509
value: CRITICAL

Trust: 0.8

CNVD: CNVD-2021-67516
value: HIGH

Trust: 0.6

CNNVD: CNNVD-202108-2286
value: CRITICAL

Trust: 0.6

VULMON: CVE-2021-39509
value: HIGH

Trust: 0.1

nvd@nist.gov: CVE-2021-39509
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-2021-67516
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: 0.6

nvd@nist.gov: CVE-2021-39509
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

NVD: CVE-2021-39509
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-2021-67516 // VULMON: CVE-2021-39509 // JVNDB: JVNDB-2021-011104 // CNNVD: CNNVD-202108-2286 // NVD: CVE-2021-39509

PROBLEMTYPE DATA

problemtype:CWE-77

Trust: 1.0

problemtype:Command injection (CWE-77) [NVD evaluation ]

Trust: 0.8

sources: JVNDB: JVNDB-2021-011104 // NVD: CVE-2021-39509

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202108-2286

TYPE

command injection

Trust: 0.6

sources: CNNVD: CNNVD-202108-2286

PATCH

title:Security Bulletinurl:https://www.dlink.com/en/security-bulletin

Trust: 0.8

title:Patch for D-Link DIR-816 command execution vulnerability (CNVD-2021-67516)url:https://www.cnvd.org.cn/patchInfo/show/288956

Trust: 0.6

title:D-Link DIR-816 Fixes for command injection vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=161270

Trust: 0.6

sources: CNVD: CNVD-2021-67516 // JVNDB: JVNDB-2021-011104 // CNNVD: CNNVD-202108-2286

EXTERNAL IDS

db:NVDid:CVE-2021-39509

Trust: 3.9

db:JVNDBid:JVNDB-2021-011104

Trust: 0.8

db:CNVDid:CNVD-2021-67516

Trust: 0.6

db:CNNVDid:CNNVD-202108-2286

Trust: 0.6

db:VULMONid:CVE-2021-39509

Trust: 0.1

sources: CNVD: CNVD-2021-67516 // VULMON: CVE-2021-39509 // JVNDB: JVNDB-2021-011104 // CNNVD: CNNVD-202108-2286 // NVD: CVE-2021-39509

REFERENCES

url:https://github.com/doudoudedi/main-dir-816_a2_command-injection/blob/main/injection.md

Trust: 2.5

url:https://www.dlink.com/en/security-bulletin/

Trust: 1.7

url:https://github.com/doudoudedi/main-dir-816_a2_command-injection

Trust: 1.7

url:https://nvd.nist.gov/vuln/detail/cve-2021-39509

Trust: 1.4

url:https://cwe.mitre.org/data/definitions/77.html

Trust: 0.1

url:https://nvd.nist.gov

Trust: 0.1

sources: CNVD: CNVD-2021-67516 // VULMON: CVE-2021-39509 // JVNDB: JVNDB-2021-011104 // CNNVD: CNNVD-202108-2286 // NVD: CVE-2021-39509

SOURCES

db:CNVDid:CNVD-2021-67516
db:VULMONid:CVE-2021-39509
db:JVNDBid:JVNDB-2021-011104
db:CNNVDid:CNNVD-202108-2286
db:NVDid:CVE-2021-39509

LAST UPDATE DATE

2024-08-14T13:53:56.511000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2021-67516date:2021-09-02T00:00:00
db:VULMONid:CVE-2021-39509date:2021-09-01T00:00:00
db:JVNDBid:JVNDB-2021-011104date:2022-07-19T04:57:00
db:CNNVDid:CNNVD-202108-2286date:2021-09-02T00:00:00
db:NVDid:CVE-2021-39509date:2021-09-01T00:35:55.797

SOURCES RELEASE DATE

db:CNVDid:CNVD-2021-67516date:2021-09-02T00:00:00
db:VULMONid:CVE-2021-39509date:2021-08-24T00:00:00
db:JVNDBid:JVNDB-2021-011104date:2022-07-19T00:00:00
db:CNNVDid:CNNVD-202108-2286date:2021-08-24T00:00:00
db:NVDid:CVE-2021-39509date:2021-08-24T19:15:32.967