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CVE-2020-36438 — Vulnerability in tiny_future — CVE Details

HIGH

Future<T> lacks bounds on Send and Sync.

Published December 8, 2020Updated November 8, 2023Source: osv

Summary

`tiny_future` contains a light-weight implementation of `Future`s. The `Future` type it has lacked bound on its `Send` and `Sync` traits. This allows for a bug where non-thread safe types such as `Cell` can be used in `Future`s and cause data races in concurrent programs. The flaw was corrected in commit `c791919` by adding trait bounds to `Future`'s `Send` and `Sync`.

Advisory Timeline

  • First published December 8, 2020 (2134 days ago).
  • Last revised November 8, 2023 — 1065 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Cargo
Update tiny_future to 0.4.0 or later
cargo update -p tiny_future --precise 0.4.0

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: crates.io (1).

PackageEcosystemAffectedFixed In
tiny_future
crates.io
All versions0.4.0

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 8.1 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

References

Frequently Asked Questions

What is CVE-2020-36438?
Future<T> lacks bounds on Send and Sync. This vulnerability has been assigned a severity rating of HIGH (CVSS score: 8.1/10).
How do I check if my project is affected by CVE-2020-36438?
CVE-2020-36438 affects tiny_future. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2020-36438 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
8.1

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

RUSTSEC-2020-0118
GHSA-fg42-vwxx-xx5j
GHSA-m296-j53x-xv95

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