RUSTSEC-2019-0019

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Source

https://rustsec.org/advisories/RUSTSEC-2019-0019

Import Source

https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2019-0019.json

JSON Data

https://api.osv.dev/v1/vulns/RUSTSEC-2019-0019

Aliases

CVE-2019-16143
GHSA-4x25-pvhw-5224

Published

2019-08-25T12:00:00Z

Modified

2023-11-08T04:01:16.407154Z

Severity

9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

HMAC-BLAKE2 algorithms compute incorrect results

Details

When used in conjunction with the Hash-based Message Authentication Code (HMAC), the BLAKE2b and BLAKE2s implementations in blake2 crate versions prior to v0.8.1 used an incorrect block size (32-bytes instead of 64-bytes for BLAKE2s, and 64-bytes instead of 128-bytes for BLAKE2b), causing them to miscompute the MacResult.

The v0.8.1 release of the blake2 crate uses the correct block sizes.

Note that this advisory only impacts usage of BLAKE2 with HMAC, and does not impact Digest functionality.

Database specific

{
    "license": "CC0-1.0"
}

References

Affected packages

crates.io / blake2

Package

Name: blake2; View open source insights on deps.dev
Purl: pkg:cargo/blake2

Affected ranges

Type: SEMVER
Events: Introduced

0.0.0-0

Fixed

0.8.1

Ecosystem specific

{
    "affected_functions": null,
    "affects": {
        "os": [],
        "functions": [],
        "arch": []
    }
}

Database specific

{
    "cvss": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "informational": null,
    "categories": [
        "crypto-failure"
    ]
}