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CVE-2020-36450 — Vulnerability in bunch — CVE Details

HIGH

Bunch<T> unconditionally implements Send/Sync

Published November 12, 2020Updated November 8, 2023Source: osv

Summary

Affected versions of this crate unconditionally implements `Send`/`Sync` for `Bunch<T>`. This allows users to insert `T: !Sync` to `Bunch<T>`. It is possible to create a data race to a `T: !Sync` by invoking the `Bunch::get()` API (which returns `&T`) from multiple threads. It is also possible to send `T: !Send` to other threads by inserting `T` inside `Bunch<T>` and sending `Bunch<T>` to another thread, allowing to create a data race by inserting types like `T = Rc<_>`. Such data races can lead to memory corruption.

Advisory Timeline

  • First published November 12, 2020 (2160 days ago).
  • Last revised November 8, 2023 — 1091 days after initial publication.

Affected Packages (1)

Affects 1 ecosystem: crates.io (1).

PackageEcosystemAffectedFixed In
bunch
crates.io
All versionsRange-based data available

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-2020-36450?
Bunch<T> unconditionally implements Send/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-2020-36450?
CVE-2020-36450 affects bunch. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2020-36450 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-2020-0130
GHSA-jwph-qp5h-f9wj

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