Slither v0.6.7 - Static Analyzer For Solidity

2019-10-23T21:08:04
ID KITPLOIT:8894502723099443623
Type kitploit
Reporter KitPloit
Modified 2019-10-23T21:08:04

Description

Slither is a Solidity static analysis framework written in Python 3. It runs a suite of vulnerability detectors, prints visual information about contract details, and provides an API to easily write custom analyses. Slither enables developers to find vulnerabilities, enhance their code comprehension, and quickly prototype custom analyses.

Features

  • Detects vulnerable Solidity code with low false positives
  • Identifies where the error condition occurs in the source code
  • Easily integrates into continuous integration and Truffle builds
  • Built-in 'printers' quickly report crucial contract information
  • Detector API to write custom analyses in Python
  • Ability to analyze contracts written with Solidity >= 0.4
  • Intermediate representation ( SlithIR ) enables simple, high-precision analyses
  • Correctly parses 99.9% of all public Solidity code
  • Average execution time of less than 1 second per contract

Usage
Run Slither on a Truffle/Embark/Dapp/Etherlime application:

slither .

Run Slither on a single file:

$ slither tests/uninitialized.sol

For additional configuration, see the usage documentation.
Use solc-select if your contracts require older versions of solc.

Detectors
By default, all the detectors are run.
Num | Detector | What it Detects | Impact | Confidence
---|---|---|---|---
1 | rtlo | Right-To-Left-Override control character is used | High | High
2 | shadowing-state | State variables shadowing | High | High
3 | suicidal | Functions allowing anyone to destruct the contract | High | High
4 | uninitialized-state | Uninitialized state variables | High | High
5 | uninitialized-storage | Uninitialized storage variables | High | High
6 | arbitrary-send | Functions that send ether to arbitrary destinations | High | Medium
7 | controlled-delegatecall | Controlled delegatecall destination | High | Medium
8 | reentrancy-eth | Reentrancy vulnerabilities (theft of ethers) | High | Medium
9 | erc20-interface | Incorrect ERC20 interfaces | Medium | High
10 | erc721-interface | Incorrect ERC721 interfaces | Medium | High
11 | incorrect-equality | Dangerous strict equalities | Medium | High
12 | locked-ether | Contracts that lock ether | Medium | High
13 | shadowing-abstract | State variables shadowing from abstract contracts | Medium | High
14 | constant-function | Constant functions changing the state | Medium | Medium
15 | reentrancy-no-eth | Reentrancy vulnerabilities (no theft of ethers) | Medium | Medium
16 | tx-origin | Dangerous usage of tx.origin | Medium | Medium
17 | unchecked-lowlevel | Unchecked low-level calls | Medium | Medium
18 | unchecked-send | Unchecked send | Medium | Medium
19 | uninitialized-local | Uninitialized local variables | Medium | Medium
20 | unused-return | Unused return values | Medium | Medium
21 | shadowing-builtin | Built-in symbol shadowing | Low | High
22 | shadowing-local | Local variables shadowing | Low | High
23 | void-cst | Constructor called not implemented | Low | High
24 | calls-loop | Multiple calls in a loop | Low | Medium
25 | reentrancy-benign | Benign reentrancy vulnerabilities | Low | Medium
26 | timestamp | Dangerous usage of block.timestamp | Low | Medium
27 | assembly | Assembly usage | Informational | High
28 | deprecated-standards | Deprecated Solidity Standards | Informational | High
29 | erc20-indexed | Un-indexed ERC20 event parameters | Informational | High
30 | low-level-calls | Low level calls | Informational | High
31 | naming-convention | Conformance to Solidity naming conventions | Informational | High
32 | pragma | If different pragma directives are used | Informational | High
33 | solc-version | Incorrect Solidity version (< 0.4.24 or complex pragma) | Informational | High
34 | unused-state | Unused state variables | Informational | High
35 | too-many-digits | Conformance to numeric notation best practices | Informational | Medium
36 | constable-states | State variables that could be declared constant | Optimization | High
37 | external-function | Public function that could be declared as external | Optimization | High
Contact us to get access to additional detectors.

Printers
To run a printer, use --print and a comma-separated list of printers.
Num | Printer | Description
---|---|---
1 | call-graph | Export the call-graph of the contracts to a dot file
2 | cfg | Export the CFG of each functions
3 | constructor-calls | Print the constructors executed
4 | contract-summary | Print a summary of the contracts
5 | data-dependency | Print the data dependencies of the variables
6 | echidna | Export Echidna guiding information
7 | function-id | Print the keccack256 signature of the functions
8 | function-summary | Print a summary of the functions
9 | human-summary | Print a human-readable summary of the contracts
10 | inheritance | Print the inheritance relations between contracts
11 | inheritance-graph | Export the inheritance graph of each contract to a dot file
12 | modifiers | Print the modifiers called by each function
13 | require | Print the require and assert calls of each function
14 | slithir | Print the slithIR representation of the functions
15 | slithir-ssa | Print the slithIR representation of the functions
16 | variable-order | Print the storage order of the state variables
17 | vars-and-auth | Print the state variables written and the authorization of the functions

How to install
Slither requires Python 3.6+ and solc , the Solidity compiler.

Using Pip

$ pip install slither-analyzer

Using Git

$ git clone https://github.com/crytic/slither.git && cd slither
$ python setup.py install

We recommend using an Python virtual environment, as detailed in the Developer Installation Instructions , if you prefer to install Slither via git.

Using Docker
Use the eth-security-toolbox docker image. It includes all of our security tools and every major version of Solidity in a single image. /home/share will be mounted to /share in the container. Use solc-select to switch the Solidity version.

docker pull trailofbits/eth-security-toolbox

To share a directory in the container:

docker run -it -v /home/share:/share trailofbits/eth-security-toolbox

Getting Help
Feel free to stop by our Slack channel (#ethereum) for help using or extending Slither.

Download Slither