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ID

VAR-202104-1185


CVE

CVE-2021-27707


TITLE

Tenda G1  and  G3  Classic buffer overflow vulnerability in routers

Trust: 0.8

sources: JVNDB: JVNDB-2021-005409

DESCRIPTION

Buffer Overflow in Tenda G1 and G3 routers with firmware v15.11.0.17(9502)_CN allows remote attackers to execute arbitrary code via a crafted action/"portMappingIndex "request. This occurs because the "formDelPortMapping" function directly passes the parameter "portMappingIndex" to strcpy without limit. The Tenda G1 and G3 are routers from the Chinese company Tenda

Trust: 2.25

sources: NVD: CVE-2021-27707 // JVNDB: JVNDB-2021-005409 // CNVD: CNVD-2022-10753 // VULMON: CVE-2021-27707

IOT TAXONOMY

category:['Network device']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2022-10753

AFFECTED PRODUCTS

vendor:tendamodel:g1scope:eqversion:v15.11.0.17\(9502\)_cn

Trust: 1.0

vendor:tendamodel:g3scope:eqversion:v15.11.0.17\(9502\)_cn

Trust: 1.0

vendor:tendamodel:g3scope: - version: -

Trust: 0.8

vendor:tendamodel:g1scope: - version: -

Trust: 0.8

vendor:tendamodel:g1 and g3 15.11.0.17 cnscope: - version: -

Trust: 0.6

sources: CNVD: CNVD-2022-10753 // JVNDB: JVNDB-2021-005409 // NVD: CVE-2021-27707

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-27707
value: CRITICAL

Trust: 1.0

NVD: CVE-2021-27707
value: CRITICAL

Trust: 0.8

CNVD: CNVD-2022-10753
value: HIGH

Trust: 0.6

CNNVD: CNNVD-202104-1080
value: CRITICAL

Trust: 0.6

VULMON: CVE-2021-27707
value: HIGH

Trust: 0.1

nvd@nist.gov: CVE-2021-27707
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-2022-10753
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-2021-27707
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-2021-27707
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-2022-10753 // VULMON: CVE-2021-27707 // JVNDB: JVNDB-2021-005409 // CNNVD: CNNVD-202104-1080 // NVD: CVE-2021-27707

PROBLEMTYPE DATA

problemtype:CWE-120

Trust: 1.0

problemtype:Classic buffer overflow (CWE-120) [NVD Evaluation ]

Trust: 0.8

sources: JVNDB: JVNDB-2021-005409 // NVD: CVE-2021-27707

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202104-1080

TYPE

other

Trust: 0.6

sources: CNNVD: CNNVD-202104-1080

PATCH

title:Top Pageurl:https://www.tendacn.com/default.html

Trust: 0.8

sources: JVNDB: JVNDB-2021-005409

EXTERNAL IDS

db:NVDid:CVE-2021-27707

Trust: 3.9

db:JVNDBid:JVNDB-2021-005409

Trust: 0.8

db:CNVDid:CNVD-2022-10753

Trust: 0.6

db:CNNVDid:CNNVD-202104-1080

Trust: 0.6

db:VULMONid:CVE-2021-27707

Trust: 0.1

sources: CNVD: CNVD-2022-10753 // VULMON: CVE-2021-27707 // JVNDB: JVNDB-2021-005409 // CNNVD: CNNVD-202104-1080 // NVD: CVE-2021-27707

REFERENCES

url:https://hackmd.io/u7ovgyiurcokv7sw5-euhw

Trust: 3.1

url:https://nvd.nist.gov/vuln/detail/cve-2021-27707

Trust: 1.4

url:https://cwe.mitre.org/data/definitions/120.html

Trust: 0.1

url:https://nvd.nist.gov

Trust: 0.1

sources: CNVD: CNVD-2022-10753 // VULMON: CVE-2021-27707 // JVNDB: JVNDB-2021-005409 // CNNVD: CNNVD-202104-1080 // NVD: CVE-2021-27707

SOURCES

db:CNVDid:CNVD-2022-10753
db:VULMONid:CVE-2021-27707
db:JVNDBid:JVNDB-2021-005409
db:CNNVDid:CNNVD-202104-1080
db:NVDid:CVE-2021-27707

LAST UPDATE DATE

2024-11-23T22:25:04.907000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2022-10753date:2022-02-16T00:00:00
db:VULMONid:CVE-2021-27707date:2021-04-20T00:00:00
db:JVNDBid:JVNDB-2021-005409date:2021-12-14T07:16:00
db:CNNVDid:CNNVD-202104-1080date:2021-04-22T00:00:00
db:NVDid:CVE-2021-27707date:2024-11-21T05:58:27.853

SOURCES RELEASE DATE

db:CNVDid:CNVD-2022-10753date:2022-02-16T00:00:00
db:VULMONid:CVE-2021-27707date:2021-04-14T00:00:00
db:JVNDBid:JVNDB-2021-005409date:2021-12-14T00:00:00
db:CNNVDid:CNNVD-202104-1080date:2021-04-14T00:00:00
db:NVDid:CVE-2021-27707date:2021-04-14T15:15:14.440