Incorrect Comparison Affecting vyper package, versions [0,0.3.2)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Not Defined
EPSS
0.07% (34th percentile)

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  • Snyk IDSNYK-PYTHON-VYPER-2440813
  • published5 Apr 2022
  • disclosed5 Apr 2022
  • creditUnknown

Introduced: 5 Apr 2022

CVE-2022-24787  (opens in a new tab)
CWE-697  (opens in a new tab)

How to fix?

Upgrade vyper to version 0.3.2 or higher.

Overview

vyper is a Pythonic Smart Contract Language for the EVM.

Affected versions of this package are vulnerable to Incorrect Comparison where bytestrings can have dirty bytes in them, resulting in the word-for-word comparisons giving incorrect results. Even without dirty nonzero bytes, two bytestrings can compare to equal if one ends with "\x00" because there is no comparison of the length.

References

CVSS Scores

version 3.1