vyperlang/vyper · Security
Vyper has incorrect re-entrancy lock when key is empty string
- GHSA ID
- GHSA-3hg2-r75x-g69m
- CVE ID
- CVE-2023-42441
- Severity
- medium
- Published
- Updated
- CVSS
- 5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CVSS v3
- 5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Description
Impact
Locks of the type @nonreentrant("") or @nonreentrant('') do not produce reentrancy checks at runtime.
@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?
CWEs
- CWE-667 · Improper Locking
- CWE-833 · Deadlock
References
- https://github.com/vyperlang/vyper/security/advisories/GHSA-3hg2-r75x-g69m ↗
- https://github.com/vyperlang/vyper/pull/3605 ↗
- https://github.com/vyperlang/vyper/commit/0b740280c1e3c5528a20d47b29831948ddcc6d83 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2023-42441 ↗
- https://github.com/pypa/advisory-database/tree/main/vulns/vyper/PYSEC-2023-305.yaml ↗
- https://github.com/advisories/GHSA-3hg2-r75x-g69m ↗