Vyper storage allocator overflow
CVE-2023-30837

7.5HIGH

Key Information:

Vendor

Vyperlang

Status
Vyper
Vendor
CVE Published:
8 May 2023

What is CVE-2023-30837?

The Vyper programming language, utilized for creating smart contracts on the Ethereum Virtual Machine (EVM), has a critical issue in versions prior to 0.3.8 that involves the storage allocator not properly guarding against allocation overflows. This flaw enables an attacker to manipulate the storage, potentially overwriting the owner variable and compromising contract integrity. The issue was patched in version 0.3.8, making it imperative for developers to update their installations to ensure security in their smart contract implementations.

Affected Version(s)

vyper < 0.3.8

References

https://github.com/vyperlang/vyper/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/vyperlang/vyper/commit/0bb7203b584e771...
x_refsource_MISC

CVSS V3.1

Score:
7.5
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

.