GHSA-686F-CH3R-XWMH

Vulnerability from github – Published: 2021-08-25 20:58 – Updated: 2021-08-24 17:47
VLAI
Summary
Data races in unicycle
Details

Affected versions of this crate unconditionally implemented Send & Sync for types PinSlab<T> & Unordered<T, S>. This allows sending non-Send types to other threads and concurrently accessing non-Sync types from multiple threads.

This can result in a data race & memory corruption when types that provide internal mutability without synchronization are contained within PinSlab<T> or Unordered<T, S> and accessed concurrently from multiple threads.

The flaw was corrected in commits 92f40b4 & 6a6c367 by adding trait bound T: Send to Send impls for PinSlab<T> & Unordered<T, S> and adding T: Sync to Sync impls for PinSlab<T> & Unordered<T, S>.

Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "unicycle"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.7.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-36436"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119",
      "CWE-362"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-08-18T20:15:26Z",
    "nvd_published_at": "2021-08-08T06:15:00Z",
    "severity": "HIGH"
  },
  "details": "Affected versions of this crate unconditionally implemented `Send` \u0026 `Sync` for types `PinSlab\u003cT\u003e` \u0026 `Unordered\u003cT, S\u003e`. This allows sending non-Send types to other threads and concurrently accessing non-Sync types from multiple threads.\n\nThis can result in a data race \u0026 memory corruption when types that provide internal mutability without synchronization are contained within `PinSlab\u003cT\u003e` or `Unordered\u003cT, S\u003e` and accessed concurrently from multiple threads.\n\nThe flaw was corrected in commits 92f40b4 \u0026 6a6c367 by adding trait bound `T: Send` to `Send` impls for `PinSlab\u003cT\u003e` \u0026 `Unordered\u003cT, S\u003e` and adding `T: Sync` to `Sync` impls for `PinSlab\u003cT\u003e` \u0026 `Unordered\u003cT, S\u003e`.",
  "id": "GHSA-686f-ch3r-xwmh",
  "modified": "2021-08-24T17:47:59Z",
  "published": "2021-08-25T20:58:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-36436"
    },
    {
      "type": "WEB",
      "url": "https://github.com/udoprog/unicycle/issues/8"
    },
    {
      "type": "WEB",
      "url": "https://github.com/udoprog/unicycle/commit/6a6c367a0c25f86f998fa315ea90c328f685b194"
    },
    {
      "type": "WEB",
      "url": "https://github.com/udoprog/unicycle/commit/92f40b4a2c671553dfa96feacff0265206c44ce5"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/udoprog/unicycle"
    },
    {
      "type": "WEB",
      "url": "https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/unicycle/RUSTSEC-2020-0116.md"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2020-0116.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Data races in unicycle"
}



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