Description
An out-of-bounds write vulnerability exists in the HandleSeaCloudMessage functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. The HandleIncomingSeaCloudMessage function uses at [3] the json_object_get_string to populate the p_name global variable. The p_name is only 0x80 bytes long, and the total MQTT message could be up to 0x201 bytes. Because the function json_object_get_string will fill str based on the length of the json’s value and not the actual str size, this would result in a possible out-of-bounds write.
Published: 2022-02-04
Score: 8.1 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2021-9141 An out-of-bounds write vulnerability exists in the HandleSeaCloudMessage functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. The HandleIncomingSeaCloudMessage function uses at [3] the json_object_get_string to populate the p_name global variable. The p_name is only 0x80 bytes long, and the total MQTT message could be up to 0x201 bytes. Because the function json_object_get_string will fill str based on the length of the json’s value and not the actual str size, this would result in a possible out-of-bounds write.
History

Wed, 16 Apr 2025 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Sealevel Seaconnect 370w Seaconnect 370w Firmware
cve-icon MITRE

Status: PUBLISHED

Assigner: talos

Published:

Updated: 2025-04-15T19:11:32.563Z

Reserved: 2021-01-04T00:00:00.000Z

Link: CVE-2021-21970

cve-icon Vulnrichment

Updated: 2024-08-03T18:30:23.629Z

cve-icon NVD

Status : Modified

Published: 2022-02-04T23:15:10.793

Modified: 2024-11-21T05:49:20.640

Link: CVE-2021-21970

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses