SF-security-features.md

Security Features

Description

The Security Features category focuses on the intrinsic security mechanisms provided by the smart contract language. It ensures that the language includes built-in protections against common vulnerabilities such as reentrancy attacks, integer overflows, and predictable randomness. By offering these safeguards, the language helps developers write secure code by default, reducing reliance on individual awareness and minimizing the risk of introducing vulnerabilities. This category also covers the language's ability to prevent exploitation through buffer overflows, dependency hijacking, and type-related issues.

This section aids auditors in assessing the language's robustness in providing essential security features for safe and reliable smart contract development.

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Ref Number	Name	Objective	Potential Issues
SF-001	Built-in Reentrancy Protection	Check if the language provides built-in reentrancy protection mechanisms to prevent reentrancy attacks and enhance contract security. Validate if the implementation works properly.	Reentrancy attacks causing fund loss Dependence on developer awareness Common security pitfalls
SF-002	Integer Overflow/Underflow Protection	Ensure the language provides built-in mechanisms to prevent integer overflow and underflow vulnerabilities, maintaining contract integrity and security.	Financial exploits via integer overflow/underflow Contract integrity compromise Loss of funds
SF-003	Secure Random Number Generation	Ensure the language offers secure random number generation primitives to prevent exploits due to predictable or manipulable randomness.	Exploits from predictable randomness Manipulation of random-dependent logic Unfair execution
SF-004	Array Bounds Checking Enforcement	Ensure the language enforces proper array bounds checking to prevent buffer overflow vulnerabilities and unauthorized memory access.	Buffer overflow vulnerabilities Unauthorized memory access Security breaches
SF-005	Protection Against Dependency Hijacking	Ensure the language ecosystem provides protection against dependency hijacking to prevent malicious code inclusion.	Malicious code introduction Backdoors in contracts Compromised security Trust issues
SF-006	Type-Related Vulnerability Safeguards	Ensure the language provides safeguards against common type-related vulnerabilities, such as type confusion and unsafe type casting, to improve security and reliability.	Type confusion vulnerabilities Exploitation via unsafe type casting Reduced contract reliability due to type issues

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References

For more information, see also:

• Vyper Nonreentrancy Lock Vulnerability Technical Post-Mortem Report
• Solidity Docs - Reentrancy
• Interesting discussion - disallow state-changing effects after an external call by default
• New batchOverflow Bug in Multiple ERC20 Smart Contracts (CVE-2018–10299)
• move security guidelines
• Cairo Security Flaws