Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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to version 0.3.8 or higher.
vyper is a Pythonic Smart Contract Language for the EVM.
Affected versions of this package are vulnerable to Out-of-bounds Write when assigning values to a dynarray whose source is the same dynarray. In that case, the length word of the dynarray is written before the data. The issue can cause data corruption across call frames.
@external
def should_revert() -> DynArray[uint256,3]:
a: DynArray[uint256, 3] = [1, 2, 3]
a = empty(DynArray[uint256, 3])
a = [self.a[0], self.a[1], self.a[2]]
return a # if bug: returns [1,2,3]