Vulnerability · Published Sep 4, 2023 · Assigned by GitHub_M
CVE-2023-41052Vyper: incorrect order of evaluation of side effects for some builtins
Low 3.7
In plain English
A low-severity security flaw in vyper from vyperlang. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Vyper is a Pythonic Smart Contract Language. In affected versions the order of evaluation of the arguments of the builtin functions `uint256_addmod`, `uint256_mulmod`, `ecadd` and `ecmul` does not follow source order. This behaviour is problematic when the evaluation of one of the arguments produces side effects that other arguments depend on. A patch is currently being developed on pull request #3583. When using builtins from the list above, users should make sure that the arguments of the expression do not produce side effects or, if one does, that no other argument is dependent on those side effects.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | vyper | 0.3.10 | GHSA-4hg4-9mf5-wxxq |
| PyPI | vyper | 0.3.10rc1 | PYSEC-2023-168 |
Affected products (as reported)
Weakness: CWE-670 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
References
- https://github.com/vyperlang/vyper/security/advisories/GHSA-4hg4-9mf5-wxxq x_refsource_CONFIRM
- https://github.com/vyperlang/vyper/pull/3583 x_refsource_MISC