README.md

Scanner for Solidity vulnerabilities or bad practices

This tool analyzes Solidity contracts for known vulnerabilities or bad practices.

This is still a work in progress though. In the end it will be provided as both a CLI tool and a Sonar plugin for CI pipelines.

CLI

A command-line tool is provided and can simply be run like this:

java -jar solidity-analyzer.jar -f <MyContract>.sol

Example of the output:

> java -jar solidity-analyzer.jar -f ThrowDeprecationContract.sol
Running Solidity Analyzer on 'ThrowDeprecationContract.sol'...
1 error(s) found!
[MAJOR] throw-deprecated error ('Throw is deprecated. Use require(), revert() or assert() instead') L9:C9 -> L11:C9

Sonar

A Sonar plugin is also available and will be soon released officially for installation.

Sample screenshot:

Analysis

Vulnerabilities

• tx.origin

  You'll get an CRITICAL error if you compare tx.origin to msg.sender has this is usually not a safe thing to do!

  This analysis is smart enough to figure out such a comparison even if tx.origin and/or msg.sender are assigned to variables.

Bad Practices

• Throw deprecated

  throw should not be used anymore. Prefer instead require() or revert() or assert().