ID |
CVE-2025-47285
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Sažetak |
Vyper is the Pythonic Programming Language for the Ethereum Virtual Machine. In versions up to and including 0.4.2rc1, `concat()` may skip evaluation of side effects when the length of an argument is zero. This is due to a fastpath in the implementation which skips evaluation of argument expressions when their length is zero. In practice, it would be very unusual in user code to construct zero-length bytestrings using an expression with side-effects, since zero-length bytestrings are typically constructed with the empty literal `b""`; the only way to construct an empty bytestring which has side effects would be with the ternary operator introduced in v0.3.8, e.g. `b"" if self.do_some_side_effect() else b""`. The fix is available in pull request 4644 and expected to be part of the 0.4.2 release. As a workaround, don't have side effects in expressions which construct zero-length bytestrings. |
Reference |
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CVSS |
Base: | 0.0 |
Impact: | None |
Exploitability: | None |
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Pristup |
Vektor | Složenost | Autentikacija |
None |
None |
None |
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Impact |
Povjerljivost | Cjelovitost | Dostupnost |
None |
None |
None |
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CVSS vektor |
None |
Zadnje važnije ažuriranje |
16-05-2025 - 14:43 |
Objavljeno |
15-05-2025 - 18:15 |