GHSA-PQPW-89W5-82V5

Vulnerability from github – Published: 2024-11-12 20:53 – Updated: 2024-11-12 20:53
VLAI?
Summary
`simd-json-derive` vulnerable to `MaybeUninit` misuse
Details

An invalid use of MaybeUninit::uninit().assume_init() in simd-json-derive's derive macro can cause undefined behavior. The original code used MaybeUninit to avoid initialisation of the struct and then set the fields using ptr::write. The undefined behavior triggered by this misuse of MaybeUninit can lead to invlaid memory access and panics in binaries compiled in release mode (aka simd-json-derive prior to version 0.12 has UB and optimizes into some nonsense)

The version 0.12.0 removes this section of code, avoiding the use of MaybeUninit alltogether.

Severity ?
6.6 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U
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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "simd-json-derive"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.12.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": true,
    "github_reviewed_at": "2024-11-12T20:53:54Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "An invalid use of `MaybeUninit::uninit().assume_init()` in `simd-json-derive`\u0027s derive macro can cause undefined behavior. The original code used `MaybeUninit` to avoid initialisation of the struct and then set the fields using `ptr::write`. The undefined behavior triggered by this misuse of `MaybeUninit` can lead to invlaid memory access and panics in binaries compiled in release mode (aka simd-json-derive prior to version 0.12 has UB and optimizes into some nonsense)\n\nThe version `0.12.0` removes this section of code, avoiding the use of MaybeUninit alltogether.\n",
  "id": "GHSA-pqpw-89w5-82v5",
  "modified": "2024-11-12T20:53:55Z",
  "published": "2024-11-12T20:53:54Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/simd-lite/simd-json-derive/issues/67"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/simd-lite/simd-json-derive"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2023-0087.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U",
      "type": "CVSS_V4"
    }
  ],
  "summary": "`simd-json-derive` vulnerable to `MaybeUninit` misuse"
}


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