Vulnerability Details CVE-2022-24787
Vyper is a Pythonic Smart Contract Language for the Ethereum Virtual Machine. In version 0.3.1 and prior, 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. A patch is available and expected to be part of the 0.3.2 release. There are currently no known workarounds.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 55.0%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- https://github.com/vyperlang/vyper/commit/2c73f8352635c0a433423a5b94740de1a118e508
- https://github.com/vyperlang/vyper/security/advisories/GHSA-7vrm-3jc8-5wwm
- https://github.com/vyperlang/vyper/commit/2c73f8352635c0a433423a5b94740de1a118e508
- https://github.com/vyperlang/vyper/security/advisories/GHSA-7vrm-3jc8-5wwm
Products affected by CVE-2022-24787
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cpe:2.3:a:vyperlang:vyper:0.0.4
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cpe:2.3:a:vyperlang:vyper:0.1.0
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cpe:2.3:a:vyperlang:vyper:0.2.0
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cpe:2.3:a:vyperlang:vyper:0.2.1
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cpe:2.3:a:vyperlang:vyper:0.2.10
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cpe:2.3:a:vyperlang:vyper:0.2.11
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cpe:2.3:a:vyperlang:vyper:0.2.12
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cpe:2.3:a:vyperlang:vyper:0.2.13
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cpe:2.3:a:vyperlang:vyper:0.2.14
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cpe:2.3:a:vyperlang:vyper:0.2.15
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cpe:2.3:a:vyperlang:vyper:0.2.16
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cpe:2.3:a:vyperlang:vyper:0.2.2
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cpe:2.3:a:vyperlang:vyper:0.2.3
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cpe:2.3:a:vyperlang:vyper:0.2.4
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cpe:2.3:a:vyperlang:vyper:0.2.5
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cpe:2.3:a:vyperlang:vyper:0.2.6
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cpe:2.3:a:vyperlang:vyper:0.2.7
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cpe:2.3:a:vyperlang:vyper:0.2.8
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cpe:2.3:a:vyperlang:vyper:0.2.9
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cpe:2.3:a:vyperlang:vyper:0.3.0
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cpe:2.3:a:vyperlang:vyper:0.3.1