Submission Details
Severity:
Due to incorrect design in `IRamses::swapExactTokensForTokens` the protocol is not compatible with Ramses exchange
Summary
The current design of IRamses interface looks like this:
interface IRamsesRouter {
struct route {
address from;
address to;
bool stable;
}
function swapExactTokensForTokens(
uint256 amountIn,
uint256 amountOutMin,
route[] calldata routes,
address to,
uint256 deadline
) external;
}
Vulnerability Details
The issue here is that swapExactTokensForTokens is missing a return value, which makes it incompatible with Ramses exchange and not able to correctly process returned values.
Impact
Protocol is not compatible with Ramses exchange.
Tools Used
Manual Review
Recommendations
Make following changes in swapExactTokensForTokens:
interface IRamsesRouter {
struct route {
address from;
address to;
bool stable;
}
function swapExactTokensForTokens(
uint256 amountIn,
uint256 amountOutMin,
route[] calldata routes,
address to,
uint256 deadline
+ ) external returns (uint256[] memory amounts);
}
Prize pool breakdown
Total prize
16,653 OP
nSLOC
25366 OP / LOC
15,800
853
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