{"id":"GHSA-9mfc-chwf-7whf","aliases":[],"url":"https://o3.security/vulnerability/GHSA-9mfc-chwf-7whf","summary":"ckb: Large dep group requires a lot of resources to process but the cost to commit the transaction is very low.","details":"### Impact\n\nWhen a transaction contains a dep group with many cells, the resources required to process it are not linear to the transaction size nor spent script cycles. \n\n### Patches\n\nIn 0.43.3, nodes drop the transactions relayed to them when they contain a dep group with more than 64 cells. They do not ban peers who send them such transactions.\n\nIn 0.100, the consensus disallow transactions using a dep group with more than 64 cells. Peers relaying such transaction must be banned. Blocks committing such transactions must be rejected.\n","published":"2022-11-02T18:14:01Z","modified":"2022-11-02T18:14:01Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"ckb","fixedVersion":"0.43.3"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/nervosnetwork/ckb/security/advisories/GHSA-9mfc-chwf-7whf"},{"type":"PACKAGE","url":"https://github.com/nervosnetwork/ckb"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2022-11-02T18:14:01Z"}}