GHSA-mr45-rx8q-wcm9

Source

https://github.com/advisories/GHSA-mr45-rx8q-wcm9

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/10/GHSA-mr45-rx8q-wcm9/GHSA-mr45-rx8q-wcm9.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-mr45-rx8q-wcm9

Aliases

Related

Published

2023-10-31T21:19:02Z

Modified

2023-11-09T08:11:22.120105Z

Severity

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

Summary

xkeys seal encryption used fixed key for all encryption

Details

Background

NATS.io is a high performance open source pub-sub distributed communication technology, built for the cloud, on-premise, IoT, and edge computing.

The cryptographic key handling library, nkeys, recently gained support for encryption, not just for signing/authentication. This is used in nats-server 2.10 (Sep 2023) and newer for authentication callouts.

Problem Description

The nkeys library's "xkeys" encryption handling logic mistakenly passed an array by value into an internal function, where the function mutated that buffer to populate the encryption key to use. As a result, all encryption was actually to an all-zeros key.

This affects encryption only, not signing.
FIXME: FILL IN IMPACT ON NATS-SERVER AUTH CALLOUT SECURITY.

Affected versions

nkeys Go library: * 0.4.0 up to and including 0.4.5 * Fixed with nats-io/nkeys: 0.4.6

NATS Server: * 2.10.0 up to and including 2.10.3 * Fixed with nats-io/nats-server: 2.10.4

Solution

Upgrade the nats-server.
For any application handling auth callouts in Go, if using the nkeys library, update the dependency, recompile and deploy that in lockstep.

Credits

Problem reported by Quentin Matillat (GitHub @tinou98).

Database specific

{
    "nvd_published_at": "2023-10-31T00:15:09Z",
    "cwe_ids": [
        "CWE-321",
        "CWE-325"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2023-10-31T21:19:02Z"
}

References

Affected packages

Go / github.com/nats-io/nkeys

Package

Name: github.com/nats-io/nkeys; View open source insights on deps.dev
Purl: pkg:golang/github.com/nats-io/nkeys

Affected ranges

Type: SEMVER
Events: Introduced

0.4.0

Fixed

0.4.6

Database specific

{
    "last_known_affected_version_range": "<= 0.4.5"
}

Go / github.com/nats-io/nats-server/v2

Package

Name: github.com/nats-io/nats-server/v2; View open source insights on deps.dev
Purl: pkg:golang/github.com/nats-io/nats-server/v2

Affected ranges

Type: SEMVER
Events: Introduced

2.10.0

Fixed

2.10.4

Database specific

{
    "last_known_affected_version_range": "<= 2.10.3"
}