{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-42806 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-42806 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-42806 is a medium-severity vulnerability in input-output-hk hydra, published on 21 Sep 2023. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-42806 and fix it if it is affected.\n\nWhat it is: CVE-2023-42806 is a medium-severity vulnerability in input-output-hk hydra, published on 21 Sep 2023. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-42806 in the wild and no public exploit code.\n\nAffected product: input-output-hk hydra. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2023-42806/ (Markdown: https://insights.sbomify.com/CVE-2023-42806/index.md)","id":"CVE-2023-42806","markdown":"https://insights.sbomify.com/CVE-2023-42806/index.md","name":"CVE-2023-42806","record":{"aliases":["GHSA-gr36-mc6v-72qq"],"analysis":{"component_type":"other","fix_type":"upgrade","impacts":["denial_of_service","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Cardano layer-two solution","requires_auth":"high_privilege","summary":"Attackers can replay old snapshots to cause denial of service or incorrect value distribution in Hydra heads by exploiting missing signature verification.","user_interaction":"not_required","vuln_class":"business_logic"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"hydra","vendor":"iohk"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-347","name":"Improper Verification of Cryptographic Signature"}],"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Snapshot signature not including HeadID will allow replay attacks","id":"CVE-2023-42806","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"business_logic","year":"2023"},"n_packages":0,"n_references":4,"next":{"headline":"Frappe LMS SQL Injection Issue on People Page","id":"CVE-2023-42807"},"packages":[],"prev":{"headline":"quinn-proto Denial of Service vulnerability","id":"CVE-2023-42805"},"products":["hydra"],"published":"2023-09-21","related":[{"cvss_score":9.1,"headline":"Hydra's committed UTxOs at Commit validator and UTxOs at Initial validator can be spent arbitrarily by anyone","id":"CVE-2023-38701","kev_date_added":null,"published":"2023-10-04"},{"cvss_score":8.1,"headline":"Business logic in hydra","id":"CVE-2023-42448","kev_date_added":null,"published":"2023-10-04"},{"cvss_score":8.1,"headline":"Business logic in hydra","id":"CVE-2023-42449","kev_date_added":null,"published":"2023-10-04"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-09-24","vendors":["input-output-hk"]},"summary":"Attackers can replay old snapshots to cause denial of service or incorrect value distribution in Hydra heads by exploiting missing signature verification.","url":"https://insights.sbomify.com/CVE-2023-42806/"}