Vulnerability Description
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. In nkeys versions 0.4.0 through 0.4.5, corresponding with NATS server versions 2.10.0 through 2.10.3, 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. nkeys Go library 0.4.6, corresponding with NATS Server 2.10.4, has a patch for this issue. No known workarounds are available. For any application handling auth callouts in Go, if using the nkeys library, update the dependency, recompile and deploy that in lockstep.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linuxfoundation | Nats-Server | >= 2.10.0, < 2.10.4 |
| Nats | Nkeys | >= 0.4.0, < 0.4.6 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2023/10/31/1Mailing ListThird Party Advisory
- https://github.com/nats-io/nkeys/security/advisories/GHSA-mr45-rx8q-wcm9Vendor Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://lists.fedoraproject.org/archives/list/[email protected]
- http://www.openwall.com/lists/oss-security/2023/10/31/1Mailing ListThird Party Advisory
- https://github.com/nats-io/nkeys/security/advisories/GHSA-mr45-rx8q-wcm9Vendor Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://lists.fedoraproject.org/archives/list/[email protected]
FAQ
What is CVE-2023-46129?
CVE-2023-46129 is a vulnerability with a CVSS score of 7.5 (HIGH). 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, recentl...
How severe is CVE-2023-46129?
CVE-2023-46129 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-46129?
Check the references section above for vendor advisories and patch information. Affected products include: Linuxfoundation Nats-Server, Nats Nkeys.