CVE-2018-15552: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

The "PayWinner" function of a simplelottery smart contract implementation for The Ethereum Lottery, an Ethereum gambling game, generates a random value with publicly readable variable "maxTickets" which is private, yet predictable and readable by the eth.getStorageAt function. Therefore, it allow...

CVE-2018-12454: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

The addguess function of a simplelottery smart contract implementation for 1000 Guess, an Ethereum gambling game, generates a random value with publicly readable variables such as the current block information and a private variable which can be read with a getStorageAt call. Therefore, it allows...