rustsec-2020-0101
Vulnerability from osv_rustsec
Published
2020-12-22 12:00
Modified
2023-06-13 13:10
Summary
conquer-once's OnceCell lacks Send bound for its Sync trait.
Details

Affected versions of conquer-once implements Sync for its OnceCell type without restricting it to Sendable types.

This allows non-Send but Sync types such as MutexGuard to be sent across threads leading to undefined behavior and memory corruption in concurrent programs.

The issue was fixed by adding a Send constraint to OnceCell.


{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "memory-corruption",
          "thread-safety"
        ],
        "cvss": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "conquer-once",
        "purl": "pkg:cargo/conquer-once"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.3.2"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2020-36208",
    "GHSA-3jc5-5hc5-33gj"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "Affected versions of `conquer-once` implements `Sync` for its `OnceCell` type\nwithout restricting it to `Send`able types.\n\nThis allows non-`Send` but `Sync` types such as `MutexGuard` to be sent across\nthreads leading to undefined behavior and memory corruption in concurrent\nprograms.\n\nThe issue was fixed by adding a `Send` constraint to `OnceCell`.",
  "id": "RUSTSEC-2020-0101",
  "modified": "2023-06-13T13:10:24Z",
  "published": "2020-12-22T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/conquer-once"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2020-0101.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/oliver-giersch/conquer-once/issues/3"
    }
  ],
  "related": [],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "conquer-once\u0027s OnceCell lacks Send bound for its Sync trait."
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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