CVE-2023-42460
Uses of `_abi_decode()` can be constructed which allow for bounds checking to be bypassed resulting in incorrect results.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.55%). 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 EVM. The `_abi_decode()` function does not validate input when it is nested in an expression. Uses of `_abi_decode()` can be constructed which allow for bounds checking to be bypassed resulting in incorrect results. This issue has not yet been fixed, but a fix is expected in release `0.3.10`. Users are advised to reference pull request #3626.
- 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
- 0.55% probability · 45th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-682
- Affected
- vyperlang/vyper
- Source
- security-advisories@github.com
References
- https://github.com/vyperlang/vyper/pull/3626Patch
- https://github.com/vyperlang/vyper/security/advisories/GHSA-cx2q-hfxr-rj97Exploit, Patch, Third Party Advisory
- https://github.com/vyperlang/vyper/pull/3626Patch
- https://github.com/vyperlang/vyper/security/advisories/GHSA-cx2q-hfxr-rj97Exploit, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.