Vulnerability-Lookup

RUSTSEC-2021-0072 (CVE-2021-38191)

Vulnerability from osv_rustsec – Published: 2021-07-07 12:00 – Updated: 2023-06-13 13:10 – Source website

Summary

Task dropped in wrong thread when aborting `LocalSet` task

Details

When aborting a task with JoinHandle::abort, the future is dropped in the thread calling abort if the task is not currently being executed. This is incorrect for tasks spawned on a LocalSet.

This can easily result in race conditions as many projects use Rc or RefCell in their Tokio tasks for better performance.

See tokio#3929 for more details.

References

URL

Type

	https://crates.io/crates/tokio	PACKAGE
	https://rustsec.org/advisories/RUSTSEC-2021-0072.html	ADVISORY
	https://github.com/tokio-rs/tokio/issues/3929	REPORT

JSON

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{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "memory-corruption"
        ],
        "cvss": null,
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [
            "tokio::task::JoinHandle::abort"
          ],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "tokio",
        "purl": "pkg:cargo/tokio"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.3.0"
            },
            {
              "fixed": "1.5.1"
            },
            {
              "introduced": "1.6.0"
            },
            {
              "fixed": "1.6.3"
            },
            {
              "introduced": "1.7.0"
            },
            {
              "fixed": "1.7.2"
            },
            {
              "introduced": "1.8.0"
            },
            {
              "fixed": "1.8.1"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2021-38191",
    "GHSA-2grh-hm3w-w7hv"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "When aborting a task with `JoinHandle::abort`, the future is dropped in the\nthread calling abort if the task is not currently being executed. This is\nincorrect for tasks spawned on a `LocalSet`.\n\nThis can easily result in race conditions as many projects use `Rc` or `RefCell`\nin their Tokio tasks for better performance.\n\nSee [tokio#3929][issue] for more details.\n\n[issue]: https://github.com/tokio-rs/tokio/issues/3929",
  "id": "RUSTSEC-2021-0072",
  "modified": "2023-06-13T13:10:24Z",
  "published": "2021-07-07T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/tokio"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2021-0072.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/tokio-rs/tokio/issues/3929"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "Task dropped in wrong thread when aborting `LocalSet` task"
}

CVE-2021-38191 (GCVE-0-2021-38191)

Vulnerability from cvelistv5 – Published: 2021-08-08 05:09 – Updated: 2024-08-04 01:37

Summary

An issue was discovered in the tokio crate before 1.8.1 for Rust. Upon a JoinHandle::abort, a Task may be dropped in the wrong thread.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

2 references

URL	Tags
https://rustsec.org/advisories/RUSTSEC-2021-0072.html	x_refsource_MISC
https://raw.githubusercontent.com/rustsec/advisor…	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

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GHSA-2GRH-HM3W-W7HV

Vulnerability from github – Published: 2021-08-25 20:55 – Updated: 2023-06-13 22:08

Summary

Race condition in tokio

Details

When aborting a task with JoinHandle::abort, the future is dropped in the thread calling abort if the task is not currently being executed. This is incorrect for tasks spawned on a LocalSet. This can easily result in race conditions as many projects use Rc or RefCell in their Tokio tasks for better performance.

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

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "tokio"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.8.0"
            },
            {
              "fixed": "1.8.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "tokio"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.7.0"
            },
            {
              "fixed": "1.7.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
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        "name": "tokio"
      },
      "ranges": [
        {
          "events": [
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    },
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        "name": "tokio"
      },
      "ranges": [
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              "introduced": "0.3.0"
            },
            {
              "fixed": "1.5.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-38191"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-362",
      "CWE-366"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-08-18T21:30:23Z",
    "nvd_published_at": "2021-08-08T06:15:00Z",
    "severity": "MODERATE"
  },
  "details": "When aborting a task with JoinHandle::abort, the future is dropped in the thread calling abort if the task is not currently being executed. This is incorrect for tasks spawned on a LocalSet. This can easily result in race conditions as many projects use Rc or RefCell in their Tokio tasks for better performance.",
  "id": "GHSA-2grh-hm3w-w7hv",
  "modified": "2023-06-13T22:08:56Z",
  "published": "2021-08-25T20:55:51Z",
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-38191"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tokio-rs/tokio/issues/3929"
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      "type": "CVSS_V3"
    }
  ],
  "summary": "Race condition in tokio"
}

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.

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-2021-0072 (CVE-2021-38191)

CVE-2021-38191 (GCVE-0-2021-38191)

GHSA-2GRH-HM3W-W7HV

Tags

Sightings

Nomenclature

Related by attack behaviour