CVE-2023-41052
incorrect order of evaluation of side effects for some builtins
Summary
### Impact The order of evaluation of the arguments of the builtin functions `uint256_addmod`, `uint256_mulmod`, `ecadd` and `ecmul` does not follow source order. • For `uint256_addmod(a,b,c)` and `uint256_mulmod(a,b,c)`, the order is `c,a,b`. • For `ecadd(a,b)` and `ecmul(a,b)`, the order is `b,a`. Note that this behaviour is problematic when the evaluation of one of the arguments produces side effects that other arguments depend on. ### Patches https://github.com/vyperlang/vyper/pull/3583 ### Workarounds When using builtins from the list above, 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
| Ecosystem | Package | Affected versions | Fixed versions |
|---|---|---|---|
| PyPI | vyper | — | 0.3.10 |
Remediation: Upgrade to 0.3.10 or later.
References
Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.
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EPSS scores provided by the FIRST.org Exploit Prediction Scoring System.