GHSA-PWHF-7427-9VV2

Vulnerability from github – Published: 2021-08-25 20:56 – Updated: 2023-06-13 16:46
VLAI?
Summary
Non-atomic writes in cgc
Details

Multiple soundness issues in Ptr in cgc

Affected versions of this crate have the following issues:

  1. Ptr implements Send and Sync for all types, this can lead to data races by sending non-thread safe types across threads.

  2. Ptr::get violates mutable alias rules by returning multiple mutable references to the same object.

  3. Ptr::write uses non-atomic writes to the underlying pointer. This means that when used across threads it can lead to data races.

Severity ?
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "cgc"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.4.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-36468"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-657"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-08-18T20:39:03Z",
    "nvd_published_at": "2021-08-08T06:15:00Z",
    "severity": "MODERATE"
  },
  "details": "# Multiple soundness issues in `Ptr` in cgc\n\nAffected versions of this crate have the following issues:\n\n1. `Ptr` implements `Send` and `Sync` for all types, this can lead to data\n   races by sending non-thread safe types across threads.\n\n2. `Ptr::get` violates mutable alias rules by returning multiple mutable\n   references to the same object.\n\n3. `Ptr::write` uses non-atomic writes to the underlying pointer. This means\n   that when used across threads it can lead to data races.",
  "id": "GHSA-pwhf-7427-9vv2",
  "modified": "2023-06-13T16:46:48Z",
  "published": "2021-08-25T20:56:57Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-36468"
    },
    {
      "type": "WEB",
      "url": "https://github.com/playXE/cgc/issues/5"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/playXE/cgc"
    },
    {
      "type": "WEB",
      "url": "https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/cgc/RUSTSEC-2020-0148.md"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2020-0148.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Non-atomic writes in cgc"
}


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