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CVE-2020-35889 — Vulnerability in crayon — CVE Details

HIGH

Misbehaving `HandleLike` implementation can lead to memory safety violation

Published August 31, 2020Updated November 8, 2023Source: osv

Summary

Unsafe code in `ObjectPool` has time-of-check to time-of-use (TOCTOU) bug that can eventually lead to a memory safety violation. `ObjectPool` and `HandlePool` implicitly assumes that `HandleLike` trait methods are pure, i.e., they always return the same value. However, this assumption is unsound since `HandleLike` is a safe, public trait that allows a custom implementation.

Advisory Timeline

  • First published August 31, 2020 (2233 days ago).
  • Last revised November 8, 2023 — 1164 days after initial publication.

Affected Packages (1)

Affects 1 ecosystem: crates.io (1).

PackageEcosystemAffectedFixed In
crayon
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-2020-35889?
Misbehaving `HandleLike` implementation can lead to memory safety violation 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-2020-35889?
CVE-2020-35889 affects crayon. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2020-35889 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-2020-0037
GHSA-m833-jv95-mfjh

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