CVEvulnerability

CVE-2021-43839

7.5 HIGH Published 2021-12-21 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-12-21
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:P/A:N
Weaknesses
CWE-670

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.

Affected configurations

• crypto cronos (< 0.6.5) • crypto ethermint (< 0.7.3) • crypto ethermint (>= 0.8.0 <= 0.9.0) • crypto evmos (<= 0.4.2)

Related

Weakness · CWE (1)

  • CWE-670 Always-Incorrect Control Flow Implementation weakness

References