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ID

VAR-202203-1598


CVE

CVE-2021-42911


TITLE

plural  DrayTek Corporation  Product Format String Vulnerability

Trust: 0.8

sources: JVNDB: JVNDB-2021-019130

DESCRIPTION

A Format String vulnerability exists in DrayTek Vigor 2960 <= 1.5.1.3, DrayTek Vigor 3900 <= 1.5.1.3, and DrayTek Vigor 300B <= 1.5.1.3 in the mainfunction.cgi file via a crafted HTTP message containing malformed QUERY STRING, which could let a remote malicious user execute arbitrary code. DrayTek Corporation of Vigor2960 firmware, Vigor3900 firmware, Vigor300b A format string vulnerability exists in the firmware.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. DrayTek Vigor is a router

Trust: 2.16

sources: NVD: CVE-2021-42911 // JVNDB: JVNDB-2021-019130 // CNVD: CNVD-2022-31820

IOT TAXONOMY

category:['Network device']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2022-31820

AFFECTED PRODUCTS

vendor:draytekmodel:vigor3900scope:lteversion:1.5.1.3

Trust: 1.0

vendor:draytekmodel:vigor2960scope:lteversion:1.5.1.3

Trust: 1.0

vendor:draytekmodel:vigor300bscope:lteversion:1.5.1.3

Trust: 1.0

vendor:draytekmodel:vigor3900scope: - version: -

Trust: 0.8

vendor:draytekmodel:vigor2960scope: - version: -

Trust: 0.8

vendor:draytekmodel:vigor300bscope: - version: -

Trust: 0.8

vendor:draytekmodel:vigor2960scope:lteversion:<=1.5.1.3

Trust: 0.6

vendor:draytekmodel:vigor300bscope:lteversion:<=1.5.1.3

Trust: 0.6

vendor:draytekmodel:vigor3900scope:lteversion:<=1.5.1.3

Trust: 0.6

sources: CNVD: CNVD-2022-31820 // JVNDB: JVNDB-2021-019130 // NVD: CVE-2021-42911

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-42911
value: CRITICAL

Trust: 1.0

NVD: CVE-2021-42911
value: CRITICAL

Trust: 0.8

CNVD: CNVD-2022-31820
value: HIGH

Trust: 0.6

CNNVD: CNNVD-202203-2507
value: CRITICAL

Trust: 0.6

nvd@nist.gov: CVE-2021-42911
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: 1.8

CNVD: CNVD-2022-31820
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-2021-42911
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-2021-42911
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-2022-31820 // JVNDB: JVNDB-2021-019130 // CNNVD: CNNVD-202203-2507 // NVD: CVE-2021-42911

PROBLEMTYPE DATA

problemtype:CWE-134

Trust: 1.0

problemtype:Format string problem (CWE-134) [NVD evaluation ]

Trust: 0.8

sources: JVNDB: JVNDB-2021-019130 // NVD: CVE-2021-42911

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202203-2507

TYPE

format string error

Trust: 0.6

sources: CNNVD: CNNVD-202203-2507

PATCH

title:Patch for DrayTek Vigor Format String Vulnerabilityurl:https://www.cnvd.org.cn/patchInfo/show/330826

Trust: 0.6

title:Draytek Fixes for formatting string errors in various productsurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=187839

Trust: 0.6

sources: CNVD: CNVD-2022-31820 // CNNVD: CNNVD-202203-2507

EXTERNAL IDS

db:NVDid:CVE-2021-42911

Trust: 3.8

db:JVNDBid:JVNDB-2021-019130

Trust: 0.8

db:CNVDid:CNVD-2022-31820

Trust: 0.6

db:CNNVDid:CNNVD-202203-2507

Trust: 0.6

sources: CNVD: CNVD-2022-31820 // JVNDB: JVNDB-2021-019130 // CNNVD: CNNVD-202203-2507 // NVD: CVE-2021-42911

REFERENCES

url:https://gist.github.com/cossack9989/e9c1c2d2e69b773ca4251acdd77f2835

Trust: 2.4

url:https://nvd.nist.gov/vuln/detail/cve-2021-42911

Trust: 1.4

url:https://cxsecurity.com/cveshow/cve-2021-42911/

Trust: 0.6

sources: CNVD: CNVD-2022-31820 // JVNDB: JVNDB-2021-019130 // CNNVD: CNNVD-202203-2507 // NVD: CVE-2021-42911

SOURCES

db:CNVDid:CNVD-2022-31820
db:JVNDBid:JVNDB-2021-019130
db:CNNVDid:CNNVD-202203-2507
db:NVDid:CVE-2021-42911

LAST UPDATE DATE

2024-11-23T21:58:28.784000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2022-31820date:2022-04-24T00:00:00
db:JVNDBid:JVNDB-2021-019130date:2023-07-18T08:33:00
db:CNNVDid:CNNVD-202203-2507date:2022-04-06T00:00:00
db:NVDid:CVE-2021-42911date:2024-11-21T06:28:17.733

SOURCES RELEASE DATE

db:CNVDid:CNVD-2022-31820date:2022-04-24T00:00:00
db:JVNDBid:JVNDB-2021-019130date:2023-07-18T00:00:00
db:CNNVDid:CNNVD-202203-2507date:2022-03-29T00:00:00
db:NVDid:CVE-2021-42911date:2022-03-29T20:15:07.690