CVE-2023-46129 – github.com/nats-io/nkeys

Package

Manager: go
Name: github.com/nats-io/nkeys
Vulnerable Version: >=0.4.0 <0.4.6

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00092 pctl0.26924

Details

xkeys seal encryption used fixed key for all encryption ## 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).

Metadata

Created: 2023-10-31T21:19:02Z
Modified: 2023-10-31T21:19:02Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/10/GHSA-mr45-rx8q-wcm9/GHSA-mr45-rx8q-wcm9.json
CWE IDs: ["CWE-321", "CWE-325"]
Alternative ID: GHSA-mr45-rx8q-wcm9
Finding: F052
Auto approve: 1