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ID

VAR-202203-1484


CVE

CVE-2021-45756


TITLE

ASUSTeK Computer Inc.  of  RT-AC68U  firmware and  RT-AC5300  Classic buffer overflow vulnerability in firmware

Trust: 0.8

sources: JVNDB: JVNDB-2021-019013

DESCRIPTION

Asus RT-AC68U <3.0.0.4.385.20633 and RT-AC5300 <3.0.0.4.384.82072 are affected by a buffer overflow in blocking_request.cgi. ASUSTeK Computer Inc. of RT-AC68U firmware and RT-AC5300 Firmware has a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. ASUS RT-AC68U and ASUS RT-AC5300 are both routers from the Chinese company ASUS (ASUS). Asus RT-AC68U versions prior to 3.0.0.4.385.20633 and RT-AC5300 versions prior to 3.0.0.4.384.82072 have a command injection vulnerability. The vulnerability stems from the fact that when performing operations on memory in blocking_request.cgi, the data boundary is not properly verified. Exploiting this vulnerability leads to arbitrary command execution

Trust: 2.16

sources: NVD: CVE-2021-45756 // JVNDB: JVNDB-2021-019013 // CNVD: CNVD-2022-31523

IOT TAXONOMY

category:['Network device']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2022-31523

AFFECTED PRODUCTS

vendor:asusmodel:rt-ac68uscope:ltversion:3.0.0.4.385.20633

Trust: 1.6

vendor:asusmodel:rt-ac5300scope:ltversion:3.0.0.4.384.82072

Trust: 1.6

vendor:asustek computermodel:rt-ac68uscope: - version: -

Trust: 0.8

vendor:asustek computermodel:rt-ac5300scope: - version: -

Trust: 0.8

sources: CNVD: CNVD-2022-31523 // JVNDB: JVNDB-2021-019013 // NVD: CVE-2021-45756

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-45756
value: CRITICAL

Trust: 1.0

NVD: CVE-2021-45756
value: CRITICAL

Trust: 0.8

CNVD: CNVD-2022-31523
value: HIGH

Trust: 0.6

CNNVD: CNNVD-202203-2029
value: CRITICAL

Trust: 0.6

nvd@nist.gov: CVE-2021-45756
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-2022-31523
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-2021-45756
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-2021-45756
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-2022-31523 // JVNDB: JVNDB-2021-019013 // CNNVD: CNNVD-202203-2029 // NVD: CVE-2021-45756

PROBLEMTYPE DATA

problemtype:CWE-120

Trust: 1.0

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

Trust: 0.8

sources: JVNDB: JVNDB-2021-019013 // NVD: CVE-2021-45756

TYPE

other

Trust: 0.6

sources: CNNVD: CNNVD-202203-2029

EXTERNAL IDS

db:NVDid:CVE-2021-45756

Trust: 3.8

db:JVNDBid:JVNDB-2021-019013

Trust: 0.8

db:CNVDid:CNVD-2022-31523

Trust: 0.6

db:CNNVDid:CNNVD-202203-2029

Trust: 0.6

sources: CNVD: CNVD-2022-31523 // JVNDB: JVNDB-2021-019013 // CNNVD: CNNVD-202203-2029 // NVD: CVE-2021-45756

REFERENCES

url:http://asus.com

Trust: 2.4

url:https://github.com/ibuili/asus

Trust: 2.4

url:http://rt-ac68u.com

Trust: 1.6

url:https://nvd.nist.gov/vuln/detail/cve-2021-45756

Trust: 1.4

url:https://cxsecurity.com/cveshow/cve-2021-45756/

Trust: 0.6

sources: CNVD: CNVD-2022-31523 // JVNDB: JVNDB-2021-019013 // CNNVD: CNNVD-202203-2029 // NVD: CVE-2021-45756

SOURCES

db:CNVDid:CNVD-2022-31523
db:JVNDBid:JVNDB-2021-019013
db:CNNVDid:CNNVD-202203-2029
db:NVDid:CVE-2021-45756

LAST UPDATE DATE

2024-11-23T22:15:50.892000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2022-31523date:2022-04-22T00:00:00
db:JVNDBid:JVNDB-2021-019013date:2023-07-13T08:30:00
db:CNNVDid:CNNVD-202203-2029date:2022-03-28T00:00:00
db:NVDid:CVE-2021-45756date:2024-11-21T06:33:00.580

SOURCES RELEASE DATE

db:CNVDid:CNVD-2022-31523date:2022-04-22T00:00:00
db:JVNDBid:JVNDB-2021-019013date:2023-07-13T00:00:00
db:CNNVDid:CNNVD-202203-2029date:2022-03-23T00:00:00
db:NVDid:CVE-2021-45756date:2022-03-23T11:15:08.087