Root + Impact

Description

• When a function accepts an address argument that is meant to represent a valid user, contract, or owner, it is a crucial security and robustness best practice to include a check to ensure that the provided address is not the zero address (address(0x0)).

• Several functions across FestivalPass.sol, BeatToken.sol, and inherited OpenZeppelin contracts lack these essential zero-address checks. This omission can lead to serious issues such as accidental loss of administrative control, permanent freezing of funds, or rendering core contract functionalities unusable if a critical address is inadvertently or maliciously set to address(0).

SLITHER OUTPUT:

Risk

Likelihood:

• This will occur if a user or administrator mistakenly provides address(0) as an input to any of the affected functions.

• This will occur if an attacker intentionally passes address(0) in an attempt to disable functionality or gain control (e.g., setting owner to zero address).

Impact:

• Loss of Control: Setting administrative roles (like owner or organizer) to address(0) effectively renders the contract unmanageable, as the zero address cannot initiate transactions.

• Irrecoverable Funds: Sending funds to address(0) (as in the withdraw function) means the funds are permanently lost and unrecoverable.

• Broken Functionality: If critical contract dependencies (like beatToken or festivalContract) are set to address(0), functions relying on these addresses will likely revert or behave unexpectedly.

• Deployment Errors: If crucial constructor parameters are address(0), the contract might be deployed in an unusable or compromised state.

Proof of Concept

Recommended Mitigation