CVE-2022-24787

Incorrect Comparison in Vyper

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 `"\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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.33%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: vyperlang vyper
Published at:
Updated at:

References

Link Tags
https://github.com/vyperlang/vyper/security/advisories/GHSA-7vrm-3jc8-5wwm third party advisory patch
https://github.com/vyperlang/vyper/commit/2c73f8352635c0a433423a5b94740de1a118e508 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2022-24787?
CVE-2022-24787 has been scored as a high severity vulnerability.
How to fix CVE-2022-24787?
To fix CVE-2022-24787, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-24787 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-24787 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-24787?
CVE-2022-24787 affects vyperlang vyper.
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