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CVE-2020-35874 — Use after free in internment — CVE Details

HIGH

Use after free in internment

Published August 25, 2021Updated November 8, 2023Source: osv

Summary

ArcIntern::drop has a race condition where it can release memory which is about to get another user. The new user will get a reference to freed memory. This was fixed by serializing access to an interned object while it is being deallocated. Versions prior to 0.3.12 used stronger locking which avoided the problem.

Advisory Timeline

  • First published August 25, 2021 (1874 days ago).
  • Last revised November 8, 2023 — 804 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Cargo
Update internment to 0.4.0 or later
cargo update -p internment --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
internment
crates.io
All versions0.4.0

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

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-2020-35874?
Use after free in internment 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-2020-35874?
CVE-2020-35874 affects internment. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2020-35874 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
8.1

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-96w3-p368-4h8c
RUSTSEC-2020-0017

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