CVE Vulnerabilities

CVE-2021-43839

Always-Incorrect Control Flow Implementation

Published: Dec 21, 2021 | Modified: Jan 05, 2022
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N
RedHat/V2
RedHat/V3
Ubuntu

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 SDKs 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.

Weakness

The code contains a control flow path that does not reflect the algorithm that the path is intended to implement, leading to incorrect behavior any time this path is navigated.

Affected Software

Name Vendor Start Version End Version
Cronos Crypto * 0.6.5 (excluding)
Ethermint Crypto * 0.7.3 (excluding)
Ethermint Crypto 0.8.0 (including) 0.9.0 (including)
Evmos Crypto * 0.4.2 (including)

References