CVE-2021-21962

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.

CVSS v3 8.1 HIGH
CVSS v2.0 6.8 MEDIUM

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1390	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:sealevel:seaconnect_370w_firmware:1.3.34:*:*:*:*:*:*:*

cpe:2.3:h:sealevel:seaconnect_370w:-:*:*:*:*:*:*:*

History

08 Feb 2022, 18:48

Type	Values Removed	Values Added
First Time		Sealevel Sealevel seaconnect 370w Sealevel seaconnect 370w Firmware
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 6.8 v3 : 8.1
CPE		cpe:2.3:h:sealevel:seaconnect_370w:-:::::::* cpe:2.3:o:sealevel:seaconnect_370w_firmware:1.3.34:::::::*
CWE		CWE-787
References	~~(MISC) https://talosintelligence.com/vulnerability_reports/TALOS-2021-1390 -~~	(MISC) https://talosintelligence.com/vulnerability_reports/TALOS-2021-1390 - Exploit, Third Party Advisory

04 Feb 2022, 23:28

Type	Values Removed	Values Added
New CVE

Information

Published : 2022-02-04 23:15

Updated : 2023-12-10 14:09

NVD link : CVE-2021-21962

Mitre link : CVE-2021-21962

CVE.ORG link : CVE-2021-21962

JSON object : View

Products Affected

sealevel

seaconnect_370w
seaconnect_370w_firmware

CWE

CWE-787

Out-of-bounds Write

CWE-122

Heap-based Buffer Overflow

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