EUVD-2018-4039

Malware in sbrugna...

Code injection

A lottery smart contract implementation for Greedy 599, an Ethereum gambling game, generates a random value that is predictable via an external contract call. The developer used the extcodesize function to prevent a malicious contract from being called, but the attacker can bypass it by writing t...

Design/Logic Flaw

The fallback function of a simple lottery smart contract implementation for Lucky9io, an Ethereum gambling game, generates a random value with the publicly readable variable entrynumber. This variable is private, yet it is readable by eth.getStorageAt function. Also, attackers can purchase a tick...

Design/Logic Flaw

The maxRandom function of a smart contract implementation for All For One, an Ethereum gambling game, generates a random value with publicly readable variables because the seed value can be retrieved with a getStorageAt call. Therefore, it allows attackers to always win and get rewards...

Information disclosure

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...

CVE-2018-12454

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...

CVE-2018-12454

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...