{"id":"PYSEC-2022-196","details":"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.","aliases":["CVE-2022-24787","GHSA-7vrm-3jc8-5wwm"],"modified":"2023-11-01T04:58:08.865007Z","published":"2022-04-04T18:15:00Z","references":[{"type":"FIX","url":"https://github.com/vyperlang/vyper/commit/2c73f8352635c0a433423a5b94740de1a118e508"},{"type":"ADVISORY","url":"https://github.com/vyperlang/vyper/security/advisories/GHSA-7vrm-3jc8-5wwm"}],"affected":[{"package":{"name":"vyper","ecosystem":"PyPI","purl":"pkg:pypi/vyper"},"ranges":[{"type":"GIT","repo":"https://github.com/vyperlang/vyper","events":[{"introduced":"0"},{"fixed":"2c73f8352635c0a433423a5b94740de1a118e508"}]},{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.3.2"}]}],"versions":["0.1.0b1","0.1.0b10","0.1.0b11","0.1.0b12","0.1.0b13","0.1.0b14","0.1.0b15","0.1.0b16","0.1.0b17","0.1.0b2","0.1.0b3","0.1.0b4","0.1.0b5","0.1.0b6","0.1.0b7","0.1.0b8","0.1.0b9","0.2.1","0.2.10","0.2.11","0.2.12","0.2.13","0.2.14","0.2.15","0.2.16","0.2.2","0.2.3","0.2.4","0.2.5","0.2.6","0.2.7","0.2.8","0.2.9","0.3.0","0.3.1"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/vyper/PYSEC-2022-196.yaml"}}],"schema_version":"1.7.3"}