Improper Input Validation

2023-06-2607:28:26

Veracode Vulnerability Database

sca.analysiscenter.veracode.com

vulnerability

input validation

insecure contracts

multiproof verification

0 value node

depth 1

merkle tree

balanced trees

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS

0.001

Percentile

38.5%

JSON

@openzeppelin/contracts and @openzeppelin/contracts-upgradeable are vulnerable to Improper Input Validation. If a contract uses multiproofs for verification and the merkle tree processing includes a node with value 0 at depth 1, then the contract may be insecure. Balanced trees with three or fewer leaves may accidentally experience this, or a malicious tree builder is able to purposefully add such a node in the tree.