CyberRota Analysis
This is a high severity vulnerability with a CVSS score of 8.1. See the original NVD description below for full technical details.
CVE
CVE-2021-21969
Severity
HIGH
CVSS
8.1
EPSS
0.89%
Original NVD 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 [4] the json_object_get_string to populate the p_payload global variable. The p_payload is only 0x100 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.
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