CVE-2024-37153 Evmos's contract balance not updating correctly after interchain transaction

2024-06-0618:51:30

CWE-670

GitHub_M

www.cve.org

cve-2024-37153

evmos

contract balance

interchain transaction

safe

liquid stake

ics20 transfer

infinite money glitch

supply

patch

v18.1.0

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

EPSS

Percentile

9.0%

JSON

Evmos is the Ethereum Virtual Machine (EVM) Hub on the Cosmos Network. There is an issue with how to liquid stake using Safe which itself is a contract. The bug only appears when there is a local state change together with an ICS20 transfer in the same function and uses the contract’s balance, that is using the contract address as the sender parameter in an ICS20 transfer using the ICS20 precompile. This is in essence the “infinite money glitch” allowing contracts to double the supply of Evmos after each transaction.The issue has been patched in versions >=V18.1.0.

CNA Affected

[
  {
    "vendor": "evmos",
    "product": "evmos",
    "versions": [
      {
        "version": "<= 18.0.0",
        "status": "affected"
      }
    ]
  }
]