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In Eclipse Paho Go MQTT v3.1 library (paho.mqtt.golang) versions <=1.5.0 UTF-8 encoded strings, passed into the library, may be incorrectly encoded if their length exceeds 65535 bytes. This may lead to unexpected content in packets sent to the server (for example, part of an MQTT topic may leak into the message body in a PUBLISH packet). The issue arises because the length of the data passed in was converted from an int64/int32 (depending upon CPU) to an int16 without checks for overflows. The int16 length was then written, followed by the data (e.g. topic). This meant that when the data (e.g. topic) was over 65535 bytes then the amount of data written exceeds what the length field indicates. This could lead to a corrupt packet, or mean that the excess data leaks into another field (e.g. topic leaks into message body).

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数值类型间的不正确转换

Eclipse Paho Go MQTT v3.1 library 安全漏洞

Eclipse Paho Go MQTT v3.1 library是Eclipse基金会的一个Go语言软件库。 Eclipse Paho Go MQTT v3.1 library 1.5.0及之前版本存在安全漏洞，该漏洞源于未检查数据长度转换时的溢出，可能导致数据包内容泄露。

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