{"id":"CVE-2021-45700","aliases":["EUVD-2022-0568","GHSA-45p7-c959-rgcm","GHSA-cw98-cx2m-9qqg","RUSTSEC-2021-0109"],"status":"published","title":"Process crashes when the cell used as DepGroup is not alive","description":"An issue was discovered in the ckb crate before 0.40.0 for Rust. Attackers can cause a denial of service (Nervos CKB blockchain node crash) via a dead call that is used as a DepGroup.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01124,"percentile":0.66494,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400"],"published":"2021-07-25T12:00:00Z","modified":"2026-10-12T18:00:05Z","fixes":[{"ecosystem":"crates.io","package":"ckb","fixed_in":["0.40.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"crates.io","package":"ckb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.40.0"}]}]},{"source":"ghsa","ecosystem":"crates.io","package":"ckb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.40.0"}]}]},{"source":"osv","ecosystem":"crates.io","package":"ckb","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.40.0"}]}]},{"source":"osv","ecosystem":"crates.io","package":"ckb","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.40.0"}]}]},{"source":"osv","ecosystem":"crates.io","package":"ckb","ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"},{"fixed":"0.40.0"}]}]}],"products":[{"vendor":"nervos","product":"ckb"}],"references":[{"url":"https://rustsec.org/advisories/RUSTSEC-2021-0109.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","web","advisory"]},{"url":"https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/ckb/RUSTSEC-2021-0109.md","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","web"]},{"url":"https://github.com/nervosnetwork/ckb/security/advisories/GHSA-45p7-c959-rgcm","tags":["web"]},{"url":"https://github.com/advisories/GHSA-45p7-c959-rgcm"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-45700","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-cw98-cx2m-9qqg"},{"url":"https://github.com/nervosnetwork/ckb","tags":["package"]},{"url":"https://crates.io/crates/ckb","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-45700","description":"An issue was discovered in the ckb crate before 0.40.0 for Rust. Attackers can cause a denial of service (Nervos CKB blockchain node crash) via a dead call that is used as a DepGroup.","status":"published","published":"2021-12-26T21:49:14Z","modified":"2024-08-04T04:47:02.105Z","updated_at":"2026-11-02T14:33:02.580561Z"}],"euvd":[{"id":"EUVD-2022-0568","description":"An issue was discovered in the ckb crate before 0.40.0 for Rust. Attackers can cause a denial of service (Nervos CKB blockchain node crash) via a dead call that is used as a DepGroup.","status":"published","published":"2021-12-26T21:49:14Z","modified":"2024-08-04T04:47:02Z","updated_at":"2026-11-03T03:08:25.77408Z"}],"ghsa":[{"id":"GHSA-cw98-cx2m-9qqg","title":"Denial of Service in ckb","description":"An issue was discovered in the ckb crate before 0.40.0 for Rust. Attackers can cause a denial of service (Nervos CKB blockchain node crash) via a dead call that is used as a DepGroup.","status":"published","published":"2022-01-06T22:10:08Z","modified":"2023-06-13T17:05:34Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:36:53.654352Z"},{"id":"GHSA-45p7-c959-rgcm","title":"Process crashes when the cell used as DepGroup is not alive","description":"### Impact\n\nIt's easy to create a malign transaction which uses the dead cell as the DepGroup in the DepCells. The transaction can crash all the receiving nodes.","status":"published","published":"2021-08-25T21:01:18Z","modified":"2023-01-11T05:05:37Z","updated_at":"2026-11-02T14:36:12.361159Z"}],"nvd":[{"id":"CVE-2021-45700","description":"An issue was discovered in the ckb crate before 0.40.0 for Rust. Attackers can cause a denial of service (Nervos CKB blockchain node crash) via a dead call that is used as a DepGroup.","status":"published","published":"2021-12-27T00:15:09.66Z","modified":"2026-06-17T04:13:58.457Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:07:02.977492Z"}],"osv":[{"id":"GHSA-cw98-cx2m-9qqg","title":"Denial of Service in ckb","description":"An issue was discovered in the ckb crate before 0.40.0 for Rust. Attackers can cause a denial of service (Nervos CKB blockchain node crash) via a dead call that is used as a DepGroup.","status":"published","published":"2022-01-06T22:10:08Z","modified":"2023-11-08T04:07:22.687319Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:46:45.639885Z"},{"id":"GHSA-45p7-c959-rgcm","title":"Process crashes when the cell used as DepGroup is not alive","description":"### Impact\n\nIt's easy to create a malign transaction which uses the dead cell as the DepGroup in the DepCells. The transaction can crash all the receiving nodes.","status":"published","published":"2021-08-25T21:01:18Z","modified":"2023-11-08T04:07:22.687319Z","updated_at":"2026-11-02T15:46:36.434231Z"},{"id":"RUSTSEC-2021-0109","title":"Process crashes when the cell used as DepGroup is not alive","description":"It's easy to create a malign transaction which uses the dead cell as the DepGroup in the DepCells. The transaction can crash all the receiving nodes.","status":"published","published":"2021-07-25T12:00:00Z","modified":"2026-10-12T18:00:05.114135885Z","updated_at":"2026-11-02T15:53:39.492624Z"}]}}