CVE-2022-24787 Information

Description

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 \\ 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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

https://github.com/vyperlang/vyper/commit/2c73f8352635c0a433423a5b94740de1a118e508 https://github.com/vyperlang/vyper/security/advisories/GHSA-7vrm-3jc8-5wwm

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.5