Multiple evaluation of contract address in call in vyper
CVE-2022-29255

8.2HIGH

Key Information:

Vendor

Vyperlang

Status
Vyper
Vendor
CVE Published:
9 June 2022

What is CVE-2022-29255?

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.

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Affected Version(s)

vyper < 0.3.4

References

https://github.com/vyperlang/vyper/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/vyperlang/vyper/commit/6b4d8ff185de071...
x_refsource_MISC

CVSS V3.1

Score:
8.2
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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