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ID

VAR-202202-1821


CVE

CVE-2021-21962


TITLE

Sealevel Systems, Inc. SeaConnect 370W  Out-of-bounds write vulnerability in

Trust: 0.8

sources: JVNDB: JVNDB-2021-018276

DESCRIPTION

A heap-based buffer overflow vulnerability exists in the OTA Update u-download functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. A series of specially-crafted MQTT payloads can lead to remote code execution. An attacker must perform a man-in-the-middle attack in order to trigger this vulnerability. Sealevel Systems, Inc. SeaConnect 370W 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. Used to remotely monitor and control the status of the actual I/O process

Trust: 2.7

sources: NVD: CVE-2021-21962 // JVNDB: JVNDB-2021-018276 // CNVD: CNVD-2022-10700 // CNNVD: CNNVD-202202-098

IOT TAXONOMY

category:['IoT']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2022-10700

AFFECTED PRODUCTS

vendor:sealevelmodel:seaconnect 370wscope:eqversion:1.3.34

Trust: 1.0

vendor:sealevelmodel:seaconnect 370wscope:eqversion:seaconnect 370w firmware 1.3.34

Trust: 0.8

vendor:sealevelmodel:seaconnect 370wscope:eqversion: -

Trust: 0.8

vendor:sealevelmodel:systems seaconnect 370wscope:eqversion:v1.3.34

Trust: 0.6

sources: CNVD: CNVD-2022-10700 // JVNDB: JVNDB-2021-018276 // NVD: CVE-2021-21962

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-21962
value: HIGH

Trust: 1.0

talos-cna@cisco.com: CVE-2021-21962
value: CRITICAL

Trust: 1.0

NVD: CVE-2021-21962
value: HIGH

Trust: 0.8

CNVD: CNVD-2022-10700
value: MEDIUM

Trust: 0.6

CNNVD: CNNVD-202202-098
value: HIGH

Trust: 0.6

nvd@nist.gov: CVE-2021-21962
severity: MEDIUM
baseScore: 6.8
vectorString: AV:N/AC:M/AU:N/C:P/I:P/A:P
accessVector: NETWORK
accessComplexity: MEDIUM
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: PARTIAL
exploitabilityScore: 8.6
impactScore: 6.4
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.8

CNVD: CNVD-2022-10700
severity: MEDIUM
baseScore: 6.8
vectorString: AV:N/AC:M/AU:N/C:P/I:P/A:P
accessVector: NETWORK
accessComplexity: MEDIUM
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: PARTIAL
exploitabilityScore: 8.6
impactScore: 6.4
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.6

nvd@nist.gov: CVE-2021-21962
baseSeverity: HIGH
baseScore: 8.1
vectorString: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector: NETWORK
attackComplexity: HIGH
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 2.2
impactScore: 5.9
version: 3.1

Trust: 1.0

talos-cna@cisco.com: CVE-2021-21962
baseSeverity: CRITICAL
baseScore: 9.0
vectorString: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
attackVector: NETWORK
attackComplexity: HIGH
privilegesRequired: NONE
userInteraction: NONE
scope: CHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 2.2
impactScore: 6.0
version: 3.0

Trust: 1.0

NVD: CVE-2021-21962
baseSeverity: HIGH
baseScore: 8.1
vectorString: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector: NETWORK
attackComplexity: HIGH
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-2022-10700 // JVNDB: JVNDB-2021-018276 // CNNVD: CNNVD-202202-098 // NVD: CVE-2021-21962 // NVD: CVE-2021-21962

PROBLEMTYPE DATA

problemtype:CWE-122

Trust: 1.0

problemtype:CWE-787

Trust: 1.0

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

Trust: 0.8

sources: JVNDB: JVNDB-2021-018276 // NVD: CVE-2021-21962

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202202-098

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202202-098

PATCH

title:SeaConnect 370W Wi-Fi IIoT Edge Deviceurl:https://www.sealevel.com/product/370w-a-wifi-to-form-c-relays-digital-inputs-a-d-inputs-and-1-wire-bus-seaconnect-multifunction-io-edge-module-powered-by-seacloud/

Trust: 0.8

title:Patch for Sealevel Systems SeaConnect 370W Buffer Overflow Vulnerability (CNVD-2022-10700)url:https://www.cnvd.org.cn/patchInfo/show/319861

Trust: 0.6

title:Sealevel Systems SeaConnect 370W Buffer error vulnerability fixurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=180915

Trust: 0.6

sources: CNVD: CNVD-2022-10700 // JVNDB: JVNDB-2021-018276 // CNNVD: CNNVD-202202-098

EXTERNAL IDS

db:NVDid:CVE-2021-21962

Trust: 3.8

db:TALOSid:TALOS-2021-1390

Trust: 3.0

db:JVNDBid:JVNDB-2021-018276

Trust: 0.8

db:CNVDid:CNVD-2022-10700

Trust: 0.6

db:CNNVDid:CNNVD-202202-098

Trust: 0.6

sources: CNVD: CNVD-2022-10700 // JVNDB: JVNDB-2021-018276 // CNNVD: CNNVD-202202-098 // NVD: CVE-2021-21962

REFERENCES

url:https://talosintelligence.com/vulnerability_reports/talos-2021-1390

Trust: 3.6

url:https://nvd.nist.gov/vuln/detail/cve-2021-21962

Trust: 1.4

sources: CNVD: CNVD-2022-10700 // JVNDB: JVNDB-2021-018276 // CNNVD: CNNVD-202202-098 // NVD: CVE-2021-21962

CREDITS

Discovered by Francesco Benvenuto and Matt Wiseman of Cisco Talos.

Trust: 0.6

sources: CNNVD: CNNVD-202202-098

SOURCES

db:CNVDid:CNVD-2022-10700
db:JVNDBid:JVNDB-2021-018276
db:CNNVDid:CNNVD-202202-098
db:NVDid:CVE-2021-21962

LAST UPDATE DATE

2024-08-14T14:37:39.260000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2022-10700date:2022-02-16T00:00:00
db:JVNDBid:JVNDB-2021-018276date:2023-04-28T05:55:00
db:CNNVDid:CNNVD-202202-098date:2022-02-17T00:00:00
db:NVDid:CVE-2021-21962date:2022-07-29T16:32:12.777

SOURCES RELEASE DATE

db:CNVDid:CNVD-2022-10700date:2022-02-16T00:00:00
db:JVNDBid:JVNDB-2021-018276date:2023-04-28T00:00:00
db:CNNVDid:CNNVD-202202-098date:2022-02-01T00:00:00
db:NVDid:CVE-2021-21962date:2022-02-04T23:15:10.557