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Vulnerability CVE-2023-32058
Published: 2023-05-11
| Description: |
Vyper is a Pythonic smart contract language for the Ethereum virtual machine. Prior to version 0.3.8, due to missing overflow check for loop variables, by assigning the iterator of a loop to a variable, it is possible to overflow the type of the latter. The issue seems to happen only in loops of type `for i in range(a, a + N)` as in loops of type `for i in range(start, stop)` and `for i in range(stop)`, the compiler is able to raise a `TypeMismatch` when trying to overflow the variable. The problem has been patched in version 0.3.8. |
Type:
CWE-190 (Integer Overflow or Wraparound)
References: |
https://github.com/vyperlang/vyper/security/advisories/GHSA-6r8q-pfpv-7cgj
https://github.com/vyperlang/vyper/commit/3de1415ee77a9244eb04bdb695e249d3ec9ed868
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