CVE-2023-32058
- Reference to the description:
- 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.
- Last updated date:
- 08/02/2023
- Type:
- exploit
- Confidence:
- HIGH
- Date of publishing:
- 05/22/2023
- Reference url to background
https://github.com/vyperlang/vyper/security/advisories/GHSA-6r8q-pfpv-7cgj