Security Advisory
CVE-2020-24837
CVE vulnerability detail — eXtreme Datacenter Security Operations
Description
An integer underflow has been found in the latest version of ZCFees. The variables currPeriodIdx and lastPeriodExecIdx are both unsigned integers, and the result of the minus operation may be a negative integer which leads to an underflow. The attackers can modify the current timestamp of the transaction somehow and block the execution of the process function.