CVE-2022-24787
HIGH7.5EPSS 0.24%Incorrect Comparison in Vyper
Published: 4/4/2022Modified: 12/5/2024
Description
### Impact bytestrings can have dirty bytes in them, resulting in the word-for-word comparison to give incorrect results, e.g. ```vyper b1: Bytes[32] = b"abcdef" b1 = slice(b1, 0, 1) b2: Bytes[32] = b"abcdef" t: bool = b1 == b2 # incorrectly evaluates to True ``` even without dirty nonzero bytes, because there is no comparison of the length, two bytestrings can compare to equal if one ends with `"\x00"`. ```vyper b1: Bytes[32] = b"abc\0" b2: Bytes[32] = b"abc" t: bool = b1 == b2 # incorrectly evaluates to True ``` ### Patches fixed in https://github.com/vyperlang/vyper/commit/2c73f8352635c0a433423a5b94740de1a118e508
Affected packages (2)
- PyPI/vyperfrom 0, < 0.3.2
- PyPI/vyperfrom 0, < 2c73f8352635c0a433423a5b94740de1a118e508 | from 0, < 0.3.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |