UniswapV2Swapper Static Analysis Findings

UVS-01S: Inexistent Sanitization of Input Addresses

Type	Severity	Location
Input Sanitization		UniswapV2Swapper.sol:L26-L29

Description:

The linked function(s) accept address arguments yet do not properly sanitize them.

Impact:

The presence of zero-value addresses, especially in constructor implementations, can cause the contract to be permanently inoperable. These checks are advised as zero-value inputs are a common side-effect of off-chain software related bugs.

Example:

Copy
26constructor(address _swapRouter, address _wrappedNativeToken) {
27    swapRouter = IUniswapV2Router02(_swapRouter);
28    wrappedNativeToken = _wrappedNativeToken;
29}

Recommendation:

We advise some basic sanitization to be put in place by ensuring that each address specified is non-zero.

Alleviation:

Zero-address checks have been properly introduced for the relevant input arguments as advised.