{"id":"CVE-2021-45699","aliases":["GHSA-48vq-8jqv-gm6f","RUSTSEC-2021-0108"],"url":"https://o3.security/vulnerability/CVE-2021-45699","summary":"Allocation of Resources Without Limits or Throttling in ckb","details":"An issue was discovered in the ckb crate before 0.40.0 for Rust. Remote attackers may be able to conduct a 51% attack against the Nervos CKB blockchain by triggering an inability to allocate memory for the misbehavior HashMap.","published":"2022-01-06T22:09:49Z","modified":"2023-11-08T04:07:22.625998Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"ckb","fixedVersion":"0.40.0"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/nervosnetwork/ckb/security/advisories/GHSA-48vq-8jqv-gm6f"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-45699"},{"type":"PACKAGE","url":"https://github.com/nervosnetwork/ckb"},{"type":"WEB","url":"https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/ckb/RUSTSEC-2021-0108.md"},{"type":"WEB","url":"https://rustsec.org/advisories/RUSTSEC-2021-0108.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2023-11-08T04:07:22.625998Z"}}