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CVE-2019-16143 — Algorithms compute incorrect results in blake2 —...

CRITICAL

Algorithms compute incorrect results in blake2

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

Summary

An issue was discovered in the blake2 crate before 0.8.1 for Rust. The BLAKE2b and BLAKE2s algorithms, when used with HMAC, produce incorrect results because the block sizes are half of the required sizes.

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 blake2 to 0.8.1 or later
cargo update -p blake2 --precise 0.8.1

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

Affected Packages (1)

Affects 1 ecosystem: crates.io (1).

PackageEcosystemAffectedFixed In
blake2
crates.io
All versions0.8.1

Vulnerability Classification

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

  • CWE-327
    Use of a Broken or Risky Cryptographic AlgorithmMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

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

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

References

Frequently Asked Questions

What is CVE-2019-16143?
Algorithms compute incorrect results in blake2 This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2019-16143?
CVE-2019-16143 affects blake2. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2019-16143 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-4x25-pvhw-5224
RUSTSEC-2019-0019

Related CVEs

More crates.io advisories

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