{ "schema_version": "1.4.0", "id": "GHSA-wjf2-5mh5-257q", "modified": "2022-04-20T00:01:31Z", "published": "2022-02-10T00:00:43Z", "aliases": [ "CVE-2021-21969" ], "details": "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.", "severity": [ { "type": "CVSS_V3", "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H" } ], "affected": [], "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21969" }, { "type": "WEB", "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1396" } ], "database_specific": { "cwe_ids": [ "CWE-787" ], "severity": "HIGH", "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2022-02-04T23:15:00Z" } }