RUSTSEC-2020-0094 (CVE-2020-36203)

Vulnerability from osv_rustsec – Published: 2020-12-01 12:00 – Updated: 2023-06-13 13:10 – Source website
VLAI
Summary
Unsound: can make `ARefss` contain a !Send, !Sync object.
Details

ARefss<'a, V> is a type that is assumed to contain objects that are Send + Sync.

In the affected versions of this crate, Send/Sync traits are unconditionally implemented for ARefss<'a, V>.

By using the ARefss::map() API, we can insert a !Send or !Sync object into ARefss<'a, V>. After that, it is possible to create a data race to the inner object of ARefss<'a, V>, which can lead to undefined behavior & memory corruption.

The flaw was corrected in commit 6dd7ca0 (https://github.com/diwic/reffers-rs/commit/6dd7ca0d50f2464df708975cdafcfaeeb6d41c66) by adding trait bound V: Send + Sync to ARefss::map() API.


{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "memory-corruption",
          "thread-safety"
        ],
        "cvss": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
        "informational": "unsound"
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "reffers",
        "purl": "pkg:cargo/reffers"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.6.1"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2020-36203",
    "GHSA-39xg-8p43-h76x"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "`ARefss\u003c\u0027a, V\u003e` is a type that is assumed to contain objects that are `Send + Sync`.\n\nIn the affected versions of this crate,\n`Send`/`Sync` traits are unconditionally implemented for `ARefss\u003c\u0027a, V\u003e`.\n\nBy using the `ARefss::map()` API, we can insert a `!Send` or `!Sync` object into `ARefss\u003c\u0027a, V\u003e`. After that, it is possible to create a data race to the inner object of `ARefss\u003c\u0027a, V\u003e`, which can lead to undefined behavior \u0026 memory corruption.\n\nThe flaw was corrected in commit 6dd7ca0 (https://github.com/diwic/reffers-rs/commit/6dd7ca0d50f2464df708975cdafcfaeeb6d41c66) by adding trait bound `V: Send + Sync` to `ARefss::map()` API.",
  "id": "RUSTSEC-2020-0094",
  "modified": "2023-06-13T13:10:24Z",
  "published": "2020-12-01T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/reffers"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2020-0094.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/diwic/reffers-rs/issues/7"
    }
  ],
  "related": [],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Unsound: can make `ARefss` contain a !Send, !Sync object."
}



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