Vulnerability-Lookup

RUSTSEC-2020-0060 (CVE-2020-35906)

Vulnerability from osv_rustsec – Published: 2020-09-04 12:00 – Updated: 2023-06-13 13:10 – Source website

Summary

futures_task::waker may cause a use-after-free if used on a type that isn't 'static

Details

Affected versions of the crate did not properly implement a 'static lifetime bound on the waker function. This resulted in a use-after-free if Waker::wake() is called after original data had been dropped.

The flaw was corrected by adding 'static lifetime bound to the data waker takes.

Severity

7.8 (High)


                    
                      CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

URL

Type

	https://crates.io/crates/futures-task	PACKAGE
	https://rustsec.org/advisories/RUSTSEC-2020-0060.html	ADVISORY
	https://github.com/rust-lang/futures-rs/pull/2206	WEB

JSON

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{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "code-execution",
          "memory-corruption"
        ],
        "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": [
            "futures_task::waker"
          ],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "futures-task",
        "purl": "pkg:cargo/futures-task"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.2.2-0"
            },
            {
              "fixed": "0.3.6"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2020-35906",
    "GHSA-r93v-9p5q-vhpf"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "Affected versions of the crate did not properly implement a `\u0027static` lifetime bound on the `waker` function.\nThis resulted in a use-after-free if `Waker::wake()` is called after original data had been dropped.\n\nThe flaw was corrected by adding `\u0027static` lifetime bound to the data `waker` takes.",
  "id": "RUSTSEC-2020-0060",
  "modified": "2023-06-13T13:10:24Z",
  "published": "2020-09-04T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/futures-task"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2020-0060.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rust-lang/futures-rs/pull/2206"
    }
  ],
  "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": "futures_task::waker may cause a use-after-free if used on a type that isn\u0027t \u0027static"
}

CVE-2020-35906 (GCVE-0-2020-35906)

Vulnerability from cvelistv5 – Published: 2020-12-31 08:21 – Updated: 2024-08-04 17:16

Summary

An issue was discovered in the futures-task crate before 0.3.6 for Rust. futures_task::waker may cause a use-after-free in a non-static type situation.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 27/100 over 2319 records in the last 180 days details

References

1 reference

URL	Tags
https://rustsec.org/advisories/RUSTSEC-2020-0060.html	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

{
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    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T17:16:13.207Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://rustsec.org/advisories/RUSTSEC-2020-0060.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
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          "value": "An issue was discovered in the futures-task crate before 0.3.6 for Rust. futures_task::waker may cause a use-after-free in a non-static type situation."
        }
      ],
      "problemTypes": [
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          "descriptions": [
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              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2020-12-31T08:21:15.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://rustsec.org/advisories/RUSTSEC-2020-0060.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-35906",
          "STATE": "PUBLIC"
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            "vendor_data": [
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                  "product_data": [
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                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
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                      }
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                },
                "vendor_name": "n/a"
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  "cveMetadata": {
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    "datePublished": "2020-12-31T08:21:15.000Z",
    "dateReserved": "2020-12-31T00:00:00.000Z",
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    "state": "PUBLISHED"
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}

GHSA-R93V-9P5Q-VHPF

Vulnerability from github – Published: 2022-05-24 17:37 – Updated: 2025-10-30 19:53

Summary

futures_task::waker may cause a use-after-free if used on a type that isn't 'static

Details

Affected versions of the crate did not properly implement a 'static lifetime bound on the waker function. This resulted in a use-after-free if Waker::wake() is called after original data had been dropped.

The flaw was corrected by adding 'static lifetime bound to the data waker takes.

Severity

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "futures-task"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.2.1"
            },
            {
              "fixed": "0.3.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-35906"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-06-16T23:58:42Z",
    "nvd_published_at": "2020-12-31T09:15:00Z",
    "severity": "HIGH"
  },
  "details": "Affected versions of the crate did not properly implement a \u0027static lifetime bound on the waker function. This resulted in a use-after-free if Waker::wake() is called after original data had been dropped.\n\nThe flaw was corrected by adding \u0027static lifetime bound to the data waker takes.",
  "id": "GHSA-r93v-9p5q-vhpf",
  "modified": "2025-10-30T19:53:41Z",
  "published": "2022-05-24T17:37:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-35906"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rust-lang/futures-rs/pull/2206"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rust-lang/futures-rs"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2020-0060.html"
    }
  ],
  "schema_version": "1.4.0",
  "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": "futures_task::waker may cause a use-after-free if used on a type that isn\u0027t \u0027static"
}

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.

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.

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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-2020-0060 (CVE-2020-35906)

CVE-2020-35906 (GCVE-0-2020-35906)

GHSA-R93V-9P5Q-VHPF

Tags

Sightings

Nomenclature

Related by attack behaviour