CVE-2022-29255

Public Exploit
Multiple evaluation of contract address in call in vyper

Description

Vyper is a Pythonic Smart Contract Language for the ethereum virtual machine. In versions prior to 0.3.4 when a calling an external contract with no return value, the contract address (including side effects) could be evaluated twice. This may result in incorrect outcomes for contracts. This issue has been addressed in v0.3.4.

Category

8.2
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.07%
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-4v9q-cgpw-cf38 exploit third party advisory mitigation
https://github.com/vyperlang/vyper/commit/6b4d8ff185de071252feaa1c319712b2d6577f8d third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2022-29255?
CVE-2022-29255 has been scored as a high severity vulnerability.
How to fix CVE-2022-29255?
To fix CVE-2022-29255, 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-2022-29255 being actively exploited in the wild?
It is possible that CVE-2022-29255 is being exploited or will be exploited in a near future based on public information. 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-2022-29255?
CVE-2022-29255 affects vyperlang vyper.
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