Vulnerability-Lookup

RUSTSEC-2018-0009 (CVE-2018-20996)

Vulnerability from osv_rustsec – Published: 2018-12-09 12:00 – Updated: 2026-07-17 15:52 – Source website

Summary

MsQueue and SegQueue suffer from double-free

Details

Even if an element is popped from a queue, crossbeam would run its destructor inside the epoch-based garbage collector. This is a source of double frees.

The flaw was corrected by wrapping elements inside queues in a ManuallyDrop.

Thanks to @c0gent for reporting the issue.

Severity

9.8 (Critical)


                    
                      CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

URL

Type

	https://crates.io/crates/crossbeam	PACKAGE
	https://rustsec.org/advisories/RUSTSEC-2018-0009.html	ADVISORY
	https://github.com/crossbeam-rs/crossbeam-epoch/i…	REPORT

JSON

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{
  "affected": [
    {
      "database_specific": {
        "categories": [],
        "cvss": "CVSS:3.0/AV:N/AC:L/PR:N/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": "crossbeam",
        "purl": "pkg:cargo/crossbeam"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.4.0"
            },
            {
              "fixed": "0.4.1"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2018-20996",
    "GHSA-c3cw-c387-pj65"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "Even if an element is popped from a queue, crossbeam would run its\ndestructor inside the epoch-based garbage collector. This is a source\nof double frees.\n\nThe flaw was corrected by wrapping elements inside queues in a\n`ManuallyDrop`.\n\nThanks to [@c0gent](https://github.com/c0gent) for reporting the issue.",
  "id": "RUSTSEC-2018-0009",
  "modified": "2026-07-17T15:52:38Z",
  "published": "2018-12-09T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/crossbeam"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2018-0009.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/crossbeam-rs/crossbeam-epoch/issues/82"
    }
  ],
  "related": [],
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "MsQueue and SegQueue suffer from double-free"
}

CVE-2018-20996 (GCVE-0-2018-20996)

Vulnerability from cvelistv5 – Published: 2019-08-26 17:13 – Updated: 2024-08-05 12:19

Summary

An issue was discovered in the crossbeam crate before 0.4.1 for Rust. There is a double free because of destructor mishandling.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://rustsec.org/advisories/RUSTSEC-2018-0009.html	x_refsource_MISC

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T12:19:27.053Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://rustsec.org/advisories/RUSTSEC-2018-0009.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in the crossbeam crate before 0.4.1 for Rust. There is a double free because of destructor mishandling."
        }
      ],
      "problemTypes": [
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          "descriptions": [
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              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2019-08-26T17:13:10.000Z",
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        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://rustsec.org/advisories/RUSTSEC-2018-0009.html"
        }
      ],
      "x_legacyV4Record": {
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          "ID": "CVE-2018-20996",
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        "affects": {
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                "product": {
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                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
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                },
                "vendor_name": "n/a"
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        },
        "data_format": "MITRE",
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        "data_version": "4.0",
        "description": {
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  "cveMetadata": {
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    "datePublished": "2019-08-26T17:13:10.000Z",
    "dateReserved": "2019-08-25T00:00:00.000Z",
    "dateUpdated": "2024-08-05T12:19:27.053Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

GHSA-C3CW-C387-PJ65

Vulnerability from github – Published: 2021-08-25 20:43 – Updated: 2023-06-13 17:11

Summary

Double free in crossbeam

Details

Even if an element is popped from a queue, crossbeam would run its destructor inside the epoch-based garbage collector. This is a source of double frees.

The flaw was corrected by wrapping elements inside queues in a ManuallyDrop.

Severity

9.8 (Critical)


                  
                    CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "crossbeam"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.4.0"
            },
            {
              "fixed": "0.4.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2018-20996"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-08-19T21:24:34Z",
    "nvd_published_at": "2019-08-26T18:15:11Z",
    "severity": "CRITICAL"
  },
  "details": "Even if an element is popped from a queue, crossbeam would run its destructor inside the epoch-based garbage collector. This is a source of double frees.\n\nThe flaw was corrected by wrapping elements inside queues in a ManuallyDrop.",
  "id": "GHSA-c3cw-c387-pj65",
  "modified": "2023-06-13T17:11:24Z",
  "published": "2021-08-25T20:43:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-20996"
    },
    {
      "type": "WEB",
      "url": "https://github.com/crossbeam-rs/crossbeam-epoch/issues/82"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/crossbeam-rs/crossbeam-epoch"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2018-0009.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Double free in crossbeam"
}

Sightings

Author	Source	Type	Date	Other

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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

RUSTSEC-2018-0009 (CVE-2018-20996)

CVE-2018-20996 (GCVE-0-2018-20996)

GHSA-C3CW-C387-PJ65

Tags

Sightings

Nomenclature

Related by attack behaviour