CVE-2023-32059

HIGH7.5

Vyper vulnerable to incorrect ordering of arguments for kwargs passed to internal calls

Published May 11, 2023

Modified 1 years ago

Details

Vyper is a Pythonic smart contract language for the Ethereum virtual machine. Prior to version 0.3.8, internal calls with default arguments are compiled incorrectly. Depending on the number of arguments provided in the call, the defaults are added not right-to-left, but left-to-right. If the types are incompatible, typechecking is bypassed. The ability to pass kwargs to internal functions is an undocumented feature that is not well known about. The issue is patched in version 0.3.8.

References

WEB

https://github.com/vyperlang/vyper/commit/c3e68c302aa6e1429946473769dd1232145822ac

WEB

https://github.com/vyperlang/vyper/security/advisories/GHSA-ph9x-4vc9-m39g

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2023-32059

CVSS Analysis

CVSS v3.1

7.5

Exploitability

Attack Vector