Vulnerability-Lookup

GHSA-P9M5-3HJ7-CP5R

Vulnerability from github – Published: 2022-05-24 17:37 – Updated: 2023-06-13 17:24

Summary

futures_task::noop_waker_ref can segfault due to dereferencing a NULL pointer

Details

Affected versions of the crate used a UnsafeCell in thread-local storage to return a noop waker reference, assuming that the reference would never be returned from another thread.

This resulted in a segmentation fault crash if Waker::wake_by_ref() was called on a waker returned from another thread due to it attempting to dereference a pointer that wasn't accessible from the main thread.

Severity

5.5 (Medium)


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

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "futures-task"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.3.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-35907"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-06-16T23:58:57Z",
    "nvd_published_at": "2020-12-31T09:15:00Z",
    "severity": "MODERATE"
  },
  "details": "Affected versions of the crate used a UnsafeCell in thread-local storage to return a noop waker reference, assuming that the reference would never be returned from another thread.\n\nThis resulted in a segmentation fault crash if Waker::wake_by_ref() was called on a waker returned from another thread due to it attempting to dereference a pointer that wasn\u0027t accessible from the main thread.",
  "id": "GHSA-p9m5-3hj7-cp5r",
  "modified": "2023-06-13T17:24:56Z",
  "published": "2022-05-24T17:37:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-35907"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rust-lang/futures-rs/issues/2091"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rust-lang/futures-rs"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2020-0061.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "futures_task::noop_waker_ref can segfault due to dereferencing a NULL pointer"
}

CVE-2020-35907 (GCVE-0-2020-35907)

Vulnerability from cvelistv5 – Published: 2020-12-31 08:20 – Updated: 2024-08-04 17:16

Summary

An issue was discovered in the futures-task crate before 0.3.5 for Rust. futures_task::noop_waker_ref allows a NULL pointer dereference.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 27/100 over 2318 records in the last 180 days details

References

1 reference

URL	Tags
https://rustsec.org/advisories/RUSTSEC-2020-0061.html	x_refsource_MISC

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T17:16:13.217Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://rustsec.org/advisories/RUSTSEC-2020-0061.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 futures-task crate before 0.3.5 for Rust. futures_task::noop_waker_ref allows a NULL pointer dereference."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-12-31T08:20:58.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://rustsec.org/advisories/RUSTSEC-2020-0061.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-35907",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "An issue was discovered in the futures-task crate before 0.3.5 for Rust. futures_task::noop_waker_ref allows a NULL pointer dereference."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://rustsec.org/advisories/RUSTSEC-2020-0061.html",
              "refsource": "MISC",
              "url": "https://rustsec.org/advisories/RUSTSEC-2020-0061.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2020-35907",
    "datePublished": "2020-12-31T08:20:58.000Z",
    "dateReserved": "2020-12-31T00:00:00.000Z",
    "dateUpdated": "2024-08-04T17:16:13.217Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

RUSTSEC-2020-0061 (CVE-2020-35907)

Vulnerability from osv_rustsec – Published: 2020-05-03 12:00 – Updated: 2023-06-13 13:10 – Source website

Summary

futures_task::noop_waker_ref can segfault due to dereferencing a NULL pointer

Details

Affected versions of the crate used a UnsafeCell in thread-local storage to return a noop waker reference, assuming that the reference would never be returned from another thread.

This resulted in a segmentation fault crash if Waker::wake_by_ref() was called on a waker returned from another thread due to it attempting to dereference a pointer that wasn't accessible from the main thread.

Reproduction Example (from issue):

use futures_task::noop_waker_ref;
fn main() {
    let waker = std::thread::spawn(|| noop_waker_ref()).join().unwrap();
    waker.wake_by_ref();
}

The flaw was corrected by using a OnceCell::Lazy<> wrapper around the noop waker instead of thread-local storage.

Severity

5.5 (Medium)


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

References

URL

Type

	https://crates.io/crates/futures-task	PACKAGE
	https://rustsec.org/advisories/RUSTSEC-2020-0061.html	ADVISORY
	https://github.com/rust-lang/futures-rs/issues/2091	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "denial-of-service"
        ],
        "cvss": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [
            "futures_task::noop_waker_ref"
          ],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "futures-task",
        "purl": "pkg:cargo/futures-task"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.3.5"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2020-35907",
    "GHSA-p9m5-3hj7-cp5r"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "Affected versions of the crate used a `UnsafeCell` in thread-local storage to return a noop waker reference,\nassuming that the reference would never be returned from another thread.\n\nThis resulted in a segmentation fault crash if `Waker::wake_by_ref()` was called on a waker returned from another thread due to \nit attempting to dereference a pointer that wasn\u0027t accessible from the main thread.\n\nReproduction Example (from issue):\n```rust\nuse futures_task::noop_waker_ref;\nfn main() {\n    let waker = std::thread::spawn(|| noop_waker_ref()).join().unwrap();\n    waker.wake_by_ref();\n}\n```\n\nThe flaw was corrected by using a `OnceCell::Lazy\u003c\u003e` wrapper around the noop waker instead of thread-local storage.",
  "id": "RUSTSEC-2020-0061",
  "modified": "2023-06-13T13:10:24Z",
  "published": "2020-05-03T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/futures-task"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2020-0061.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/rust-lang/futures-rs/issues/2091"
    }
  ],
  "related": [],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "futures_task::noop_waker_ref can segfault due to dereferencing a NULL pointer"
}

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

GHSA-P9M5-3HJ7-CP5R

CVE-2020-35907 (GCVE-0-2020-35907)

RUSTSEC-2020-0061 (CVE-2020-35907)

Tags

Sightings

Nomenclature

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