CVE-2018-12703

The CVE-2018-12703 vulnerability affects the approveAndCallcode flow in Block 18 (18T) ERC20 contracts. The issue is that _spender.call(_extraData) is not verified, enabling an attacker to hijack the callback and trigger arbitrary contract calls from the vulnerable contract. According to the Seeb...

CVE-2018-12703

The approveAndCallcode function of a smart contract implementation for Block 18 18T, an tradable Ethereum ERC20 token, allows attackers to steal assets e.g., transfer the contract's balances into their account because the callcode i.e., spender.callextraData is not verified, aka the "evilReflex"...

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...

CVE-2018-12454

The CVE-2018-12454 entry concerns the _addguess function of the simplelottery contract in 1000 Guess. The root cause is the use of publicly readable variables (block data) combined with a private variable (readable via getStorageAt) to generate the random value. This allows an attacker to predict...

FuturXE has an unspecified vulnerability

FuturXE FXE is an ethereum-based virtual currency. A security vulnerability exists in the 'transferFrom' function of the smart contract implementation in FXE, which stems from a logic error in the program. An attacker could exploit the vulnerability to make an unauthorized transfer of digital...

Input validation

The transferFrom function of a smart contract implementation for FuturXE FXE, an Ethereum ERC20 token, allows attackers to accomplish an unauthorized transfer of digital assets because of a logic error. The developer messed up with the boolean judgment - if the input value is smaller than or equa...

CVE-2018-12025

The transferFrom function of a smart contract implementation for FuturXE FXE, an Ethereum ERC20 token, allows attackers to accomplish an unauthorized transfer of digital assets because of a logic error. The developer messed up with the boolean judgment - if the input value is smaller than or equa...

CVE-2018-12025

The transferFrom function of a smart contract implementation for FuturXE FXE, an Ethereum ERC20 token, allows attackers to accomplish an unauthorized transfer of digital assets because of a logic error. The developer messed up with the boolean judgment - if the input value is smaller than or equa...

CVE-2018-12025

The CVE-2018-12025 entry concerns FuturXE (FXE) ERC20 token. Connected sources provide concrete details: transferFrom is vulnerable due to a logic error in the allowance check—the condition if (allowed[from][msg.sender] >= value) return false misorders the logic, allowing an underflow on allow...

New transferFlaw Bug Used For Possible Scam Token Listed In A Top Exchange(CVE-2018-10468)

Our automated scanning system at PeckShield discovered a new vulnerability named transferFlaw CVE-2018–10468. This particular vulnerability affects a publicly traded ERC20 token listed in a top exchange. Different from batchOverflow 1 and proxyOverflow 2 we identified before, this vulnerability...

New ownerAnyone Bug Allows For Anyone to ''Own'' Certain ERC20-Based Smart Contracts (CVE-2018-10705)

This morning, our vulnerability-scanning system at PeckShield identified a new vulnerability named ownerAnyone in certain ERC20-based smart contracts such as AURA, which is deployed by a decentralized banking and finance platform – AURORA. This bug, if successfully exploited, might introduce the...

Critical RCE Flaw Discovered in Blockchain-Based EOS Smart Contract System

Security researchers have discovered a series of new vulnerabilities in EOS blockchain platform, one of which could allow remote hackers to take complete control over the node servers running the critical blockchain-based applications. EOS is an open source smart contract platform, known as...

DimonCoin (FUD) Information Disclosure Vulnerability

DimonCoin FUD is a virtual currency system. A security vulnerability exists in the 'transferFrom' function of the smart contract implementation in DimonCoin FUD, which stems from an error in the computation of the included value. The vulnerability can be exploited by an attacker to steal assets...

CVE-2018-11411

The transferFrom function of a smart contract implementation for DimonCoin FUD, an Ethereum ERC20 token, allows attackers to steal assets e.g., transfer all victims' balances into their account because certain computations involving value are incorrect...

CVE-2018-11411

DimonCoin (FUD) ERC20 token vulnerable in transferFrom due to incorrect _value computation, enabling overflow to let an attacker steal victims’ balances; no patch details provided in the available documents.

CVE-2018-11411

The transferFrom function of a smart contract implementation for DimonCoin FUD, an Ethereum ERC20 token, allows attackers to steal assets e.g., transfer all victims' balances into their account because certain computations involving value are incorrect...

Ether Cartel Unauthorized Operation Vulnerability

Ether Cartel is a blockchain-based pharmaceutical simulation game. A security vulnerability exists in the 'DrugDealer' function of the smart contract implementation in Ether Cartel. An attacker could use the vulnerability to take control of the contract's ownership and potentially manipulate...

Code injection

The DrugDealer function of a smart contract implementation for Ether Cartel, an Ethereum game, allows attackers to take over the contract's ownership, aka ceoAnyone. After that, all the digital assets including Ether balance and tokens might be manipulated by the attackers, as exploited in the wi...