CVE-2023-42806

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.
Configurations

Configuration 1 (hide)

cpe:2.3:a:iohk:hydra:*:*:*:*:*:*:*:*

History

26 Sep 2023, 14:41

Type Values Removed Values Added
References (MISC) https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-plutus/src/Hydra/Contract/Head.hs#L583-L599 - (MISC) https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-plutus/src/Hydra/Contract/Head.hs#L583-L599 - Product
References (MISC) https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq - (MISC) https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq - Vendor Advisory
References (MISC) https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-node/src/Hydra/HeadLogic.hs#L357 - (MISC) https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-node/src/Hydra/HeadLogic.hs#L357 - Product
References (MISC) https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-node/src/Hydra/Snapshot.hs#L50-L54 - (MISC) https://github.com/input-output-hk/hydra/blob/ec6c7a2ab651462228475d0b34264e9a182c22bb/hydra-node/src/Hydra/Snapshot.hs#L50-L54 - Product
First Time Iohk hydra
Iohk
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 6.5
CPE cpe:2.3:a:iohk:hydra:*:*:*:*:*:*:*:*

21 Sep 2023, 17:15

Type Values Removed Values Added
New CVE

Information

Published : 2023-09-21 17:15

Updated : 2024-02-28 20:33


NVD link : CVE-2023-42806

Mitre link : CVE-2023-42806

CVE.ORG link : CVE-2023-42806


JSON object : View

Products Affected

iohk

  • hydra
CWE
CWE-347

Improper Verification of Cryptographic Signature