GitHub Advisoryadvisory · PyPI
GHSA-3hg2-r75x-g69m Vyper has incorrect re-entrancy lock when key is empty string
MEDIUM
Official page ↗
- Aliases
- CVE-2023-42441
- Ecosystem
- PyPI
- Packages
- vyper
- Severity
- Moderate
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Weaknesses
- CWE-667, CWE-833
- Reviewed
- 2023-09-18
Affected packages
• PyPI vyper: >= 0.2.9, < 0.3.10 → fixed in 0.3.10
Description
Impact
Locks of the type `@nonreentrant("")` or `@nonreentrant('')` do not produce reentrancy checks at runtime.
```Vyper
@nonreentrant("") # unprotected
@external
def bar():
pass
@nonreentrant("lock") # protected
@external
def foo():
pass
```
Patches
Patched in #3605
Workarounds
The lock name should be a non-empty string.
References
_Are there any links users can visit to find out more?_
Related
Alias · CVE (1)
- CVE-2023-42441 Vyper is a Pythonic Smart Contract Language for the Ethereum Virtual Machine (EVM). vulnerability
References
- https://github.com/vyperlang/vyper/security/advisories/GHSA-3hg2-r75x-g69m web
- https://nvd.nist.gov/vuln/detail/CVE-2023-42441 advisory
- https://github.com/vyperlang/vyper/pull/3605 web
- https://github.com/vyperlang/vyper/commit/0b740280c1e3c5528a20d47b29831948ddcc6d83 web
- https://github.com/pypa/advisory-database/tree/main/vulns/vyper/PYSEC-2023-305.yaml web
- https://github.com/vyperlang/vyper package