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.
References
Link Resource
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1396 Exploit Technical Description Third Party Advisory
History

No history.

cve-icon MITRE Information

Status: PUBLISHED

Assigner: talos

Published: 2022-02-04T22:29:01

Updated: 2022-02-04T22:29:01

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


Link: CVE-2021-21970

JSON object: View

cve-icon NVD Information

Status : Analyzed

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

Modified: 2022-10-01T02:11:52.033


Link: CVE-2021-21970

JSON object: View

cve-icon Redhat Information

No data.