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ID

VAR-202105-1657


CVE

CVE-2021-42659


TITLE

Shenzhen Tenda Technology Co.,Ltd.  of  AC9  Buffer error vulnerability in firmware

Trust: 0.8

sources: JVNDB: JVNDB-2021-019681

DESCRIPTION

There is a buffer overflow vulnerability in the Web server httpd of the router in Tenda router devices such as Tenda AC9 V1.0 V15.03.02.19(6318) and Tenda AC9 V3.0 V15.03.06.42_multi. When setting the virtual service, the httpd program will crash and exit when the super-long list parameter occurs. Shenzhen Tenda Technology Co.,Ltd. of AC9 A buffer error vulnerability exists in the firmware.Service operation interruption (DoS) It may be in a state. AC9 is a 1200M 11AC wireless router with Gigabit Ethernet port launched by Shenzhen Jixiang Tengda Technology Co., Ltd. in 2016. Tenda AC9 has a denial of service vulnerability, which can be exploited by attackers to cause the program to crash

Trust: 2.16

sources: NVD: CVE-2021-42659 // JVNDB: JVNDB-2021-019681 // CNVD: CNVD-2021-24948

IOT TAXONOMY

category:['Network device']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2021-24948

AFFECTED PRODUCTS

vendor:tendamodel:ac9scope:eqversion:15.03.06.42_multi

Trust: 1.0

vendor:tendamodel:ac9scope:eqversion:15.03.05.19\(6318\)

Trust: 1.0

vendor:tendamodel:ac9scope:eqversion:ac9 firmware 15.03.05.19(6318)

Trust: 0.8

vendor:tendamodel:ac9scope: - version: -

Trust: 0.8

vendor:tendamodel:ac9scope:eqversion:ac9 firmware 15.03.06.42 multi

Trust: 0.8

vendor:tendamodel:ac9scope:eqversion: -

Trust: 0.8

vendor:tendamodel:ac9scope:eqversion:v1.0v15.03.05.19(6318)

Trust: 0.6

vendor:tendamodel:ac9 v15.03.06.42 multiscope:eqversion:v3.0

Trust: 0.6

sources: CNVD: CNVD-2021-24948 // JVNDB: JVNDB-2021-019681 // NVD: CVE-2021-42659

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-42659
value: MEDIUM

Trust: 1.0

NVD: CVE-2021-42659
value: MEDIUM

Trust: 0.8

CNVD: CNVD-2021-24948
value: MEDIUM

Trust: 0.6

CNNVD: CNNVD-202205-4013
value: MEDIUM

Trust: 0.6

nvd@nist.gov: CVE-2021-42659
severity: MEDIUM
baseScore: 6.1
vectorString: AV:A/AC:L/AU:N/C:N/I:N/A:C
accessVector: ADJACENT_NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: COMPLETE
exploitabilityScore: 6.5
impactScore: 6.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.8

CNVD: CNVD-2021-24948
severity: MEDIUM
baseScore: 6.1
vectorString: AV:A/AC:L/AU:N/C:N/I:N/A:C
accessVector: ADJACENT_NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: COMPLETE
exploitabilityScore: 6.5
impactScore: 6.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.6

nvd@nist.gov: CVE-2021-42659
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

NVD: CVE-2021-42659
baseSeverity: MEDIUM
baseScore: 6.5
vectorString: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector: ADJACENT NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: CNVD: CNVD-2021-24948 // JVNDB: JVNDB-2021-019681 // CNNVD: CNNVD-202205-4013 // NVD: CVE-2021-42659

PROBLEMTYPE DATA

problemtype:CWE-119

Trust: 1.0

problemtype:Buffer error (CWE-119) [NVD evaluation ]

Trust: 0.8

sources: JVNDB: JVNDB-2021-019681 // NVD: CVE-2021-42659

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202205-4013

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202205-4013

PATCH

title:Tenda AC9 Buffer error vulnerability fixurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=199829

Trust: 0.6

sources: CNNVD: CNNVD-202205-4013

EXTERNAL IDS

db:NVDid:CVE-2021-42659

Trust: 3.2

db:CNVDid:CNVD-2021-24948

Trust: 3.0

db:JVNDBid:JVNDB-2021-019681

Trust: 0.8

db:CNNVDid:CNNVD-202205-4013

Trust: 0.6

sources: CNVD: CNVD-2021-24948 // JVNDB: JVNDB-2021-019681 // CNNVD: CNNVD-202205-4013 // NVD: CVE-2021-42659

REFERENCES

url:https://github.com/lyc-heng/routers/blob/main/routers/stack4.md

Trust: 2.4

url:https://www.cnvd.org.cn/flaw/show/cnvd-2021-24948

Trust: 2.4

url:https://nvd.nist.gov/vuln/detail/cve-2021-42659

Trust: 0.8

url:https://cxsecurity.com/cveshow/cve-2021-42659/

Trust: 0.6

sources: JVNDB: JVNDB-2021-019681 // CNNVD: CNNVD-202205-4013 // NVD: CVE-2021-42659

SOURCES

db:CNVDid:CNVD-2021-24948
db:JVNDBid:JVNDB-2021-019681
db:CNNVDid:CNNVD-202205-4013
db:NVDid:CVE-2021-42659

LAST UPDATE DATE

2024-11-23T22:57:56.886000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2021-24948date:2021-04-06T00:00:00
db:JVNDBid:JVNDB-2021-019681date:2023-08-10T08:27:00
db:CNNVDid:CNNVD-202205-4013date:2022-07-14T00:00:00
db:NVDid:CVE-2021-42659date:2024-11-21T06:27:55.827

SOURCES RELEASE DATE

db:CNVDid:CNVD-2021-24948date:2021-05-09T00:00:00
db:JVNDBid:JVNDB-2021-019681date:2023-08-10T00:00:00
db:CNNVDid:CNNVD-202205-4013date:2022-05-24T00:00:00
db:NVDid:CVE-2021-42659date:2022-05-24T12:15:07.590