7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
6.8 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
20.7%
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.
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:
NATS Server:
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.
Problem reported by Quentin Matillat (GitHub @tinou98).
www.openwall.com/lists/oss-security/2023/10/31/1
github.com/nats-io/nkeys
github.com/nats-io/nkeys/commit/58fb9d69f42ea73fffad1d14e5914dc666f3daa1
github.com/nats-io/nkeys/security/advisories/GHSA-mr45-rx8q-wcm9
lists.fedoraproject.org/archives/list/[email protected]/message/R3UETKPUB3V5JS5TLZOF3SMTGT5K5APS
lists.fedoraproject.org/archives/list/[email protected]/message/ULQQONMSCQSH5Z5OWFFQHCGEZ3NL4DRJ
nvd.nist.gov/vuln/detail/CVE-2023-46129
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
6.8 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
20.7%