GHSA-F9G6-FP84-FV92

Vulnerability from github – Published: 2023-07-19 22:09 – Updated: 2023-07-19 22:09
VLAI?
Summary
impl `FromMdbValue` for bool is unsound
Details

The implementation of FromMdbValue has several unsoundness issues. First of all, it allows to reinterpret arbitrary bytes as a bool and could make undefined behavior happen with safe function. Secondly, it allows transmuting pointer without taking memory layout into consideration. The details of reproducing the bug are available here.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "lmdb-rs"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.7.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": true,
    "github_reviewed_at": "2023-07-19T22:09:38Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "The implementation of `FromMdbValue` has several unsoundness issues. First of all, it allows to reinterpret arbitrary bytes as a bool and could make undefined behavior happen with safe function. Secondly, it allows transmuting pointer without taking memory layout into consideration. The details of reproducing the bug are available [here](https://github.com/vhbit/lmdb-rs/issues/67).\n",
  "id": "GHSA-f9g6-fp84-fv92",
  "modified": "2023-07-19T22:09:38Z",
  "published": "2023-07-19T22:09:38Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/vhbit/lmdb-rs/issues/67"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/vhbit/lmdb-rs"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2023-0047.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "impl `FromMdbValue` for bool is unsound"
}


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