Is Aster Safe? Smart Contract Security Analysis

Security Checklist

3/5 checks passed

Contract VerifiedPass

Ownership RenouncedUnknown

No Mint FunctionPass

Liquidity LockedFail

Not a ProxyPass

Audit History

2 audits on record

Jul 2249Jul 2330

Every audit run adds a dated snapshot — history is append-only and cannot be edited.

Audit Summary

This audit covers the AsterToken contract, which appears to be a standard ERC-20 token implementation. Based on the provided (truncated) source code, the contract heavily relies on battle-tested OpenZeppelin libraries, which significantly reduces the likelihood of common vulnerabilities. The primary risks identified are related to potential centralization of token supply management and the absence of an emergency pause mechanism, which are common considerations for custom token implementations. The contract is not upgradeable, eliminating upgrade-related risks.

Final Recommendation: It is recommended to thoroughly review any custom logic added to the base OpenZeppelin ERC-20 implementation, particularly regarding token supply management and access control. Consider implementing an emergency pause mechanism to provide a safety switch in unforeseen circumstances. While the use of OpenZeppelin provides a strong security baseline, continuous monitoring and adherence to best practices for smart contract development are crucial for long-term security.

Category Ratings

TechnicalLow

10/10

The technical architecture (7.1 Architecture) leverages OpenZeppelin's robust ERC-20 implementation, providing a strong foundation for code security (7.2 Code Security). This minimizes common vulnerabilities like reentrancy and integer overflows. Access control (7.3 Access Control) for core ERC

GovernanceHigh

2/10

The economic model (7.4 Economic) of a standard ERC-20 token is generally straightforward, with value derived from its utility and market dynamics. Potential economic risks typically stem from centralized control over token supply, such as an owner's ability to mint new tokens, which could dilu

UpgradesMedium

5/10

The contract is not designed to be upgradeable (7.7 Upgrades), as indicated by `is_proxy: false`. This eliminates the risks associated with proxy implementations, such as storage collisions or improper initialization. However, it also means that any future changes or bug fixes would require a new de

What Raised This Score

4 factors

Ownership status UNKNOWN (owner could not be resolved)
Top-10 concentration > 30% (93.6% total → 41.4% effective; 6.7% in EOAs, 86.8% in contracts — moderate)
Liquidity NOT locked (owner can withdraw — rug-pull risk)
2 Low finding(s) from audit

Each factor is an on-chain fact recorded at the time of this analysis. The score is computed from them by a deterministic function, so the same contract returns the same score for anyone who runs the audit. How scores are computed

Security Findings

5 total

2 Low 3 Info

L-01LowUnresolved

Centralized Control over Token Supply

If the `AsterToken` contract includes custom minting or burning functions controlled by a single owner (e.g., via `Ownable`), this introduces a centralization risk. A compromised owner key or malicious owner could manipulate the token supply, impacting tokenomics and holder trust. This falls under 7.3 Access Control and 7.4 Economic considerations.

Recommendation: Implement robust access control for supply-altering functions. Consider multi-signature wallets for critical roles or a time-locked governance mechanism for significant supply changes. Clearly document the powers of any privileged roles.

L-02LowUnresolved

Lack of Emergency Pause Functionality

The contract does not appear to implement a pause mechanism (e.g., using OpenZeppelin's `Pausable` contract). In the event of a critical vulnerability, market manipulation, or unforeseen external event, the inability to temporarily halt transfers or other critical operations could lead to significant loss of funds or protocol instability. This relates to 7.8 Operations.

Recommendation: Consider integrating a pause mechanism, ideally controlled by a multi-signature wallet or a robust governance process. This provides a crucial emergency stop-gap to mitigate damage during critical incidents.

I-01InformationalUnresolved

Reliance on OpenZeppelin Standard Implementations

The contract extensively utilizes battle-tested OpenZeppelin Contracts for its core ERC-20 functionality. This significantly reduces the attack surface and mitigates many common vulnerabilities, as these libraries are widely audited and maintained. This is a strong security practice.

Recommendation: Continue to leverage well-vetted libraries like OpenZeppelin. Ensure that any custom logic built on top of these libraries adheres to similar security standards and best practices.

I-02InformationalUnresolved

Floating Pragma Directive

The contract uses a floating pragma `^0.8.20`. While this allows for compilation with newer patch versions of Solidity, it introduces a slight risk that future compiler versions might introduce breaking changes or unexpected behavior. This is a general code quality consideration.

Recommendation: Pin the Solidity compiler version to a specific version (e.g., `pragma solidity 0.8.25;`) to ensure consistent compilation and deployment behavior across environments. This is a best practice for production contracts.

I-03InformationalUnresolved

Non-Upgradeability of Contract

The contract is not implemented as an upgradeable proxy. This means that once deployed, its logic cannot be modified. While this eliminates upgrade-related risks (7.7 Upgrades), it also means that any discovered bugs or desired feature enhancements would necessitate a new contract deployment and a potentially complex token migration process for users.

Recommendation: Understand the implications of non-upgradeability. For contracts intended to be immutable, this is acceptable. For projects requiring future flexibility or bug fixes without migration, consider an upgradeable architecture in future iterations, ensuring proper implementation of proxy patterns.

Is Aster Safe? ASTER