CVE-2023-32059
If the types are incompatible, typechecking is bypassed.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.73%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 0.73% probability · 52th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-683
- Affected
- vyperlang/vyper
- Source
- security-advisories@github.com
References
- https://github.com/vyperlang/vyper/commit/c3e68c302aa6e1429946473769dd1232145822acPatch
- https://github.com/vyperlang/vyper/security/advisories/GHSA-ph9x-4vc9-m39gExploit, Vendor Advisory
- https://github.com/vyperlang/vyper/commit/c3e68c302aa6e1429946473769dd1232145822acPatch
- https://github.com/vyperlang/vyper/security/advisories/GHSA-ph9x-4vc9-m39gExploit, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.