CVE-2021-43839

    Dashboard / Vulnerabilities / CVE-2021-43839

    CVE-2021-43839

    Published: 21 Dec 2021Last Modified: 8 Jul 2026

    Summary:

    Details: 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: https://github.com/crypto-org-chain/cronos/security/advisories/GHSA-f854-hpxv-cw9r, https://github.com/crypto-org-chain/cronos/commit/150ef237b37ac28c8136e1c0f494932860b9ebe8, https://github.com/crypto-org-chain/cronos/pull/270

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -fb7db2ecfd4c78ef31ab9887d4d2728c0473357e

    Affected versions

    v0.6.4
    v0.6.3
    v0.6.2
    v0.6.1
    v0.6.0-testnet

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-43839 | CVE-DB