CVE-2021-43839

HIGH

Cronos < 0.6.5 - Transaction Fee Theft via Custom MsgEthereumTx

Title source: llm
STIX 2.1

Description

Cronos is a commercial implementation of a blockchain. In Cronos nodes running versions before v0.6.5, it is possible to take transaction fees from Cosmos SDK's FeeCollector for the current block by sending a custom crafted MsgEthereumTx. This problem has been patched in Cronos v0.6.5. There are no tested workarounds. All validator node operators are recommended to upgrade to Cronos v0.6.5 at their earliest possible convenience.

References (3)

Core 3
Core References
Patch, Third Party Advisory x_refsource_misc
https://github.com/crypto-org-chain/cronos/pull/270

Scores

CVSS v3 7.5
EPSS 0.0131
EPSS Percentile 66.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Details

CWE
CWE-670
Status published
Products (6)
crypto/cronos < 0.6.5
crypto/ethermint < 0.7.3
crypto/evmos < 0.4.2
crypto-org-chain/cronos 0 - 0.6.5Go
tharsis/ethermint 0.8.0 - 0.10.0Go
tharsis/evmos 0Go
Published Dec 21, 2021
Tracked Since Feb 18, 2026