Fix vulnerability that allows bidders to block people who will outbid #4
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HOOK-826 Fix vulnerability related to bidders who revert on refunds
Currently, a bidder can prevent themselves from being outbid by reverting on refunds received. |
…vulnerability-related-to-bidders-who
regynald
approved these changes
May 2, 2022
| @@ -0,0 +1,25 @@ | |||
| pragma solidity ^0.8.10; | |||
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|
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| import "../../../interfaces/IHookCoveredCall.sol"; | |||
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Should we start doing direct imports instead of long relative import paths like this?
Maybe if it's a ../ relative is fine. Otherwise direct
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What is direct?
*Jake Nyquist*
*CEO @ Hook ( https://hook.xyz )*
Telegram: @jakenyquist
Twitter: @jake_nyquist
…On Mon, May 2 2022 at 2:11 PM, Regynald Augustin < ***@***.*** > wrote:
***@***.**** approved this pull request.
Small nit. Can discuss later
In src/test/utils/mocks/MaliciousBidder.sol (
#4 (comment) ) :
> @@ -0,0 +1,25 @@
+pragma solidity ^0.8.10;
+
+import
"../../../interfaces/IHookCoveredCall.sol";
Should we start doing direct imports instead of long relative import paths
like this?
Maybe if it's a../ relative is fine. Otherwise direct
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|
https://docs.soliditylang.org/en/v0.8.11/path-resolution.html#imports |
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When a bidder is outbid, we return the money to them. Currently, they are able to cause the competing bid's call to revert by bidding with a contract that throws when payments are sent.
This fixes that issue and creates a test case to ensure that, even if a bidder attempts to avoid refunds, someone else can outbid them (and settle etc).