{
"id": "GHSA-2969-8hh9-57jc",
"aliases": [
"CVE-2021-45699"
],
"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.",
"summary": "Allocation of Resources Without Limits or Throttling in ckb",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.40.0"
}
]
}
],
"package": {
"name": "ckb",
"ecosystem": "crates.io"
}
}
],
"modified": "2022-01-07T17:53:54Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"published": "2022-01-06T22:09:49Z",
"references": [
{
"url": "https://github.com/nervosnetwork/ckb/security/advisories/GHSA-48vq-8jqv-gm6f",
"type": "WEB"
},
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-45699",
"type": "ADVISORY"
},
{
"url": "https://github.com/nervosnetwork/ckb",
"type": "PACKAGE"
},
{
"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",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-770"
],
"severity": "HIGH",
"github_reviewed": true,
"nvd_published_at": "2021-12-27T00:15:00Z",
"github_reviewed_at": "2022-01-05T23:46:28Z"
}
}