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I. Basic Information for CVE-2021-21969
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Sealevel Systems SeaConnect 370w 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sealevel Systems SeaConnect 370W是美国Sealevel Systems公司的一款工业物联网(Iiot)边缘设备。用于远程监视和控制实际 I/O 进程的状态。 Sealevel Systems SeaConnect 370w存在安全漏洞,该漏洞源于HandleSeaCloudMessage功能存在越界写漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
-Sealevel" Sealevel Systems, Inc. SeaConnect 370W v1.3.34 -
II. Public POCs for CVE-2021-21969
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III. Intelligence Information for CVE-2021-21969
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IV. Related Vulnerabilities
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