CVE-2021-41122: missing clamps for decimal args in external functions

October 6, 2021 (updated November 18, 2024)

The following code does not properly validate that its input is in bounds.

@external
def foo(x: decimal) -> decimal:
return x

References

github.com/advisories/GHSA-c7pr-343r-5c46
github.com/pypa/advisory-database/tree/main/vulns/vyper/PYSEC-2021-366.yaml
github.com/vyperlang/vyper
github.com/vyperlang/vyper/pull/2447
github.com/vyperlang/vyper/security/advisories/GHSA-c7pr-343r-5c46
nvd.nist.gov/vuln/detail/CVE-2021-41122

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