CVE-2023-42806

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Source
https://cve.org/CVERecord?id=CVE-2023-42806
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-42806.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-42806
Aliases
  • GHSA-gr36-mc6v-72qq
Published
2023-09-21T16:45:34.742Z
Modified
2026-08-27T03:57:58.574427636Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H CVSS Calculator
Summary
Snapshot signature not including HeadID will allow replay attacks
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/42xxx/CVE-2023-42806.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-347"
    ]
}
References

Affected packages

Git / github.com/cardano-scaling/hydra

Affected ranges

Type
GIT
Repo
https://github.com/cardano-scaling/hydra
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
9f1027e0fdff6765f5233f19c4639fdaa3558bfa
Database specific
Show details 
{
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ],
    "cpe": "cpe:2.3:a:iohk:hydra:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.13.0"
        }
    ]
}

Affected versions

0.*
0.1.0
0.10.0
0.11.0
0.12.0
0.2.0
0.3.0
0.4.0
0.5.0
0.6.0
0.7.0
0.8.0
0.8.1
0.9.0
plutus-cbor-1.*
plutus-cbor-1.0.0
plutus-merkle-tree-1.*
plutus-merkle-tree-1.0.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-42806.json"