Submission Details
Severity:
Storage Write Removal Bug On Conditional Early Termination
Summary
Storage Write Removal Bug On Conditional Early Termination
Vulnerability Details
See the following for more info:
-https://twitter.com/solidity_lang/status/1567953562151579650?s=20&t=fXIo4hRjOiMXl2dqpD5Oyw-https://blog.soliditylang.org/2022/09/08/storage-write-removal-before-conditional-termination/
Impact
File: src/Proxy.sol
53: assembly {
54: let ptr := mload(0x40)
55: calldatacopy(ptr, 0, calldatasize())
56: let result := delegatecall(gas(), implementation, ptr, calldatasize(), 0, 0)
57: let size := returndatasize()
58: returndatacopy(ptr, 0, size)
59:
60: switch result
61: case 0 { revert(ptr, size) }
62: default { return(ptr, size) }
63: }
Tools Used
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Prize pool breakdown
Total prize
15,000 USDC
nSLOC
19477 USDC / LOC
14,000 USDC
1,000 USDC
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