Vulnerability Information
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Vulnerability Title
Snapshot signature not including HeadID will allow replay attacks
Vulnerability Description
Hydra is the layer-two scalability solution for Cardano. Prior to version 0.13.0, not signing and verifying `$\mathsf{cid}$` allows an attacker (which must be a participant of this head) to use a snapshot from an old head instance with the same participants to close the head or contest the state with it. This can lead to an incorrect distribution of value (= value extraction attack; hard, but possible) or prevent the head to finalize because the value available is not consistent with the closed utxo state (= denial of service; easy). A patch is planned for version 0.13.0. As a workaround, rotate keys between heads so not to re-use keys and not result in the same multi-signature participants.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Vulnerability Type
密码学签名的验证不恰当
Vulnerability Title
Hydra 数据伪造问题漏洞
Vulnerability Description
Hydra是一款渗透测试工具。 Hydra 0.13.0之前版本存在数据伪造问题漏洞，该漏洞源于允许攻击者通过使用不包括HeadID的快照签名进行重放攻击。
CVSS Information
N/A
Vulnerability Type
N/A