Vyper: incorrect order of evaluation of side effects for some builtins
CVE-2023-41052

3.7LOW

Key Information:

Vendor

Vyperlang

Status
Vyper
Vendor
CVE Published:
4 September 2023

What is CVE-2023-41052?

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.

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Affected Version(s)

vyper <= 0.3.9

References

https://github.com/vyperlang/vyper/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/vyperlang/vyper/pull/3583
x_refsource_MISC

CVSS V3.1

Score:
3.7
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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