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ID

VAR-202110-0395


CVE

CVE-2021-21749


TITLE

ZTE MF971R  Out-of-bounds write vulnerability in

Trust: 0.8

sources: JVNDB: JVNDB-2021-013952

DESCRIPTION

ZTE MF971R product has two stack-based buffer overflow vulnerabilities. An attacker could exploit the vulnerabilities to execute arbitrary code. ZTE MF971R Exists in an out-of-bounds write vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. ZTE MF971R is a Cat 6 LTE mobile Wi-Fi router with download speeds up to 300mbps and upload speeds up to 50mbps

Trust: 2.25

sources: NVD: CVE-2021-21749 // JVNDB: JVNDB-2021-013952 // CNVD: CNVD-2021-92825 // VULMON: CVE-2021-21749

IOT TAXONOMY

category:['Network device']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2021-92825

AFFECTED PRODUCTS

vendor:ztemodel:mf971rscope:eqversion:sv1.0.0b05

Trust: 1.0

vendor:ztemodel:mf971rscope:eqversion:1v1.0.0b06

Trust: 1.0

vendor:ztemodel:mf971rscope:eqversion:2v1.0.0b03

Trust: 1.0

vendor:ztemodel:mf971rscope:eqversion:v1.0.0b05

Trust: 1.0

vendor:ztemodel:mf971rscope:eqversion:s2v1.0.0b03

Trust: 1.0

vendor:ztemodel:mf971rscope:eqversion: -

Trust: 0.8

vendor:ztemodel:mf971rscope: - version: -

Trust: 0.8

vendor:ztemodel:mf971rscope:eqversion:mf971r firmware

Trust: 0.8

vendor:ztemodel:mf971r bd zte mf971rv1.0.0b05scope: - version: -

Trust: 0.6

vendor:ztemodel:mf971r bd plkplmf971r1v1.0.0b06scope: - version: -

Trust: 0.6

vendor:ztemodel:mf971r bd mf971r2v1.0.0b03scope: - version: -

Trust: 0.6

vendor:ztemodel:mf971r bd zte mf971rs2v1.0.0b03scope: - version: -

Trust: 0.6

vendor:ztemodel:mf971r bd zte mf971rsv1.0.0b05scope: - version: -

Trust: 0.6

sources: CNVD: CNVD-2021-92825 // JVNDB: JVNDB-2021-013952 // NVD: CVE-2021-21749

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-21749
value: CRITICAL

Trust: 1.0

NVD: CVE-2021-21749
value: CRITICAL

Trust: 0.8

CNVD: CNVD-2021-92825
value: HIGH

Trust: 0.6

CNNVD: CNNVD-202110-1268
value: CRITICAL

Trust: 0.6

VULMON: CVE-2021-21749
value: HIGH

Trust: 0.1

nvd@nist.gov: CVE-2021-21749
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-2021-92825
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-2021-21749
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-2021-21749
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-2021-92825 // VULMON: CVE-2021-21749 // JVNDB: JVNDB-2021-013952 // CNNVD: CNNVD-202110-1268 // NVD: CVE-2021-21749

PROBLEMTYPE DATA

problemtype:CWE-787

Trust: 1.0

problemtype:Out-of-bounds writing (CWE-787) [NVD evaluation ]

Trust: 0.8

sources: JVNDB: JVNDB-2021-013952 // NVD: CVE-2021-21749

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202110-1268

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202110-1268

PATCH

title:Multiple Vulnerabilities in a ZTE Mobile Internet Producturl:https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1019764

Trust: 0.8

title:Patch for ZTE MF971R stack buffer overflow vulnerabilityurl:https://www.cnvd.org.cn/patchInfo/show/301796

Trust: 0.6

title:ZTE MF971R LTE router Buffer error vulnerability fixurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=167219

Trust: 0.6

sources: CNVD: CNVD-2021-92825 // JVNDB: JVNDB-2021-013952 // CNNVD: CNNVD-202110-1268

EXTERNAL IDS

db:NVDid:CVE-2021-21749

Trust: 3.9

db:ZTEid:1019764

Trust: 1.7

db:JVNDBid:JVNDB-2021-013952

Trust: 0.8

db:CNVDid:CNVD-2021-92825

Trust: 0.6

db:CS-HELPid:SB2021101910

Trust: 0.6

db:TALOSid:TALOS-2021-1321

Trust: 0.6

db:CNNVDid:CNNVD-202110-1268

Trust: 0.6

db:VULMONid:CVE-2021-21749

Trust: 0.1

sources: CNVD: CNVD-2021-92825 // VULMON: CVE-2021-21749 // JVNDB: JVNDB-2021-013952 // CNNVD: CNNVD-202110-1268 // NVD: CVE-2021-21749

REFERENCES

url:https://nvd.nist.gov/vuln/detail/cve-2021-21749

Trust: 2.0

url:https://support.zte.com.cn/support/news/loopholeinfodetail.aspx?newsid=1019764

Trust: 1.7

url:https://www.cybersecurity-help.cz/vdb/sb2021101910

Trust: 0.6

url:https://talosintelligence.com/vulnerability_reports/talos-2021-1321

Trust: 0.6

url:https://cwe.mitre.org/data/definitions/787.html

Trust: 0.1

url:https://nvd.nist.gov

Trust: 0.1

sources: CNVD: CNVD-2021-92825 // VULMON: CVE-2021-21749 // JVNDB: JVNDB-2021-013952 // CNNVD: CNNVD-202110-1268 // NVD: CVE-2021-21749

CREDITS

Discovered by Marcin ’Icewall’ Noga of Cisco Talos.

Trust: 0.6

sources: CNNVD: CNNVD-202110-1268

SOURCES

db:CNVDid:CNVD-2021-92825
db:VULMONid:CVE-2021-21749
db:JVNDBid:JVNDB-2021-013952
db:CNNVDid:CNNVD-202110-1268
db:NVDid:CVE-2021-21749

LAST UPDATE DATE

2024-08-14T13:43:19.154000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2021-92825date:2021-12-01T00:00:00
db:VULMONid:CVE-2021-21749date:2021-10-25T00:00:00
db:JVNDBid:JVNDB-2021-013952date:2022-09-30T02:52:00
db:CNNVDid:CNNVD-202110-1268date:2021-10-27T00:00:00
db:NVDid:CVE-2021-21749date:2021-10-25T16:27:59.490

SOURCES RELEASE DATE

db:CNVDid:CNVD-2021-92825date:2021-12-01T00:00:00
db:VULMONid:CVE-2021-21749date:2021-10-20T00:00:00
db:JVNDBid:JVNDB-2021-013952date:2022-09-30T00:00:00
db:CNNVDid:CNNVD-202110-1268date:2021-10-18T00:00:00
db:NVDid:CVE-2021-21749date:2021-10-20T16:15:08.293