Decent - 0xprinc's results

Decent enables one-click transactions using any token across chains.

General Information

Platform: Code4rena

Start Date: 19/01/2024

Pot Size: $36,500 USDC

Total HM: 9

Participants: 113

Period: 3 days

Judge: 0xsomeone

Id: 322

League: ETH

Decent

Findings Distribution

Researcher Performance

Rank: 82/113

Findings: 1

Award: $0.12

🌟 Selected for report: 0

🚀 Solo Findings: 0

Lines of code

https://github.com/decentxyz/decent-bridge/blob/7f90fd4489551b69c20d11eeecb17a3f564afb18/src/DcntEth.sol#L20-#L30

Vulnerability details

Impact

Anyone can mint or burn DcntEth tokens in any amount.

Proof of Concept

There is present the mint and burn function that can be called only by the router address. The issue is in the implementation of DcntEth.sol/setRouter() function.

    function setRouter(address _router) public {
        router = _router;
    }

This function lacks validation of msg.sender which allows anyone to call this function and become router and hence will be able to mint and burn DcntEth tokens.

Tools Used

Manual Review

The function DcntEth.sol/setRouter() should include an onlyOwner modifier which will only let owner to set the router address.

Assessed type

Access Control

#0 - c4-pre-sort

2024-01-25T04:24:25Z

raymondfam marked the issue as sufficient quality report

#1 - c4-pre-sort

2024-01-25T04:24:32Z

raymondfam marked the issue as duplicate of #14

#2 - c4-judge

2024-02-03T13:09:56Z

alex-ppg marked the issue as satisfactory

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