GivingThanks
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Submission Details
Severity: medium
Valid

Security Audit Report for GivingThanks Smart Contracts

5an1tyb0y

Date: 13.11.2024

Vulnerability: Incorrect Constructor Initialization in GivingThanks Contract

Severity: High

Description:
In the constructor of the GivingThanks contract, the registry variable is incorrectly initialized to CharityRegistry(msg.sender) instead of using the passed _registry parameter. This mistake causes the contract to reference a CharityRegistry instance deployed by the GivingThanks contract’s owner instead of the intended CharityRegistry instance. As a result, the GivingThanks contract may operate with an invalid or unauthorized CharityRegistry contract, leading to potential vulnerabilities such as unauthorized charity verification or denial of service.

Mitigation:
Modify the constructor to correctly initialize the registry variable using the provided _registry parameter:

constructor(address _registry) ERC721("DonationReceipt", "DRC") {
registry = CharityRegistry(_registry);
owner = msg.sender;
tokenCounter = 0;
}
Updates

Lead Judging Commences

n0kto Lead Judge 10 months ago
Submission Judgement Published
Validated
Assigned finding tags:

finding-bad-registry-set-at-construction

Likelyhood: High, the parameter is not well used and won't be set. Impact: Low, can be changed with the setter and no one will be able to donate to malicious charity.

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