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CVE-2024-26149

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Date: February 26, 2024

Vyper is a pythonic Smart Contract Language for the ethereum virtual machine. If an excessively large value is specified as the starting index for an array in "_abi_decode", it can cause the read position to overflow. This results in the decoding of values outside the intended array bounds, potentially leading to exploitations in contracts that use arrays within "_abi_decode". This vulnerability affects 0.3.10 and earlier versions.

Language: Python

Severity Score

Related Resources (9)

https://github.com/vyperlang/vyper/pull/4091
https://github.com/vyperlang/vyper/pull/4060
https://github.com/vyperlang/vyper/security/advisories/GHSA-9p8r-4xp4-gw5w
https://github.com/vyperlang/vyper/pull/3925
https://github.com/vyperlang/vyper/pull/4144
https://github.com/pypa/advisory-database/tree/main/vulns/vyper/PYSEC-2024-164.yaml
https://nvd.nist.gov/vuln/detail/CVE-2024-26149
https://github.com/vyperlang/vyper
https://www.mend.io/vulnerability-database/CVE-2024-26149

Severity Score

Weakness Type (CWE)

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-119

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CWE-120

Top Fix

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Upgrade to version vyper - 0.4.0;vyper - no_fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

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