{
"id": "GHSA-w7j2-35mf-95p7",
"aliases": [
"CVE-2021-27378"
],
"details": "An issue was discovered in the rand_core crate before 0.6.2 for Rust. Because `read_u32_into` and `read_u64_into` mishandle certain buffer-length checks, a random number generator may be seeded with too little data. The vulnerability was introduced in v0.6.0. The advisory doesn't apply to earlier minor version numbers.\n\nBecause read_u32_into and read_u64_into mishandle certain buffer-length checks, a random number generator may be seeded with too little data.",
"summary": "Incorrect check on buffer length in rand_core",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0.6.0"
},
{
"fixed": "0.6.2"
}
]
}
],
"package": {
"name": "rand_core",
"ecosystem": "crates.io"
}
}
],
"modified": "2022-07-13T20:03:17Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"published": "2021-08-25T20:52:16Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-27378",
"type": "ADVISORY"
},
{
"url": "https://github.com/rust-random/rand/pull/1096",
"type": "WEB"
},
{
"url": "https://github.com/rust-random/rand",
"type": "PACKAGE"
},
{
"url": "https://github.com/rust-random/rand/compare/0.6.0...rand_core-0.6.2#diff-f41b3dfa5ce28f3bee390d327c50621e141cf3569921f8e9ca15ccfcf25263a9R19",
"type": "WEB"
},
{
"url": "https://github.com/rust-random/rand/compare/0.6.0...rand_core-0.6.2#diff-f41b3dfa5ce28f3bee390d327c50621e141cf3569921f8e9ca15ccfcf25263a9R28",
"type": "WEB"
},
{
"url": "https://rustsec.org/advisories/RUSTSEC-2021-0023.html",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-330"
],
"severity": "CRITICAL",
"github_reviewed": true,
"nvd_published_at": "2021-02-18T04:15:00Z",
"github_reviewed_at": "2021-08-19T17:35:01Z"
}
}