ghsa-w7j2-35mf-95p7
Vulnerability from github
Published
2021-08-25 20:52
Modified
2022-07-13 20:03
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Incorrect check on buffer length in rand_core
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.

Because read_u32_into and read_u64_into mishandle certain buffer-length checks, a random number generator may be seeded with too little data.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "rand_core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.6.0"
            },
            {
              "fixed": "0.6.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-27378"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-330"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-08-19T17:35:01Z",
    "nvd_published_at": "2021-02-18T04:15:00Z",
    "severity": "CRITICAL"
  },
  "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\u0027t 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.",
  "id": "GHSA-w7j2-35mf-95p7",
  "modified": "2022-07-13T20:03:17Z",
  "published": "2021-08-25T20:52:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-27378"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rust-random/rand/pull/1096"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rust-random/rand"
    },
    {
      "type": "WEB",
      "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Incorrect check on buffer length in rand_core"
}


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