NATS Server: Queue Subscribe Authz Bypass
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.3%
exploitation probability
0.3%top 73% of all CVEs
observed exploitation
nono source reports it
NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.0, 2.12.7, and 2.11.16, an authenticated user with subscription deny permissions could bypass a plain subject deny rule by using a queue subscription, because queue-specific deny evaluation could override the plain subject deny result when the queue name itself was not denied. This issue is fixed in versions 2.14.0, 2.12.7, and 2.11.16.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected products
nats-io · nats-serverReferences
https://github.com/nats-io/nats-server/commit/013586288078def45a6788096924eb4d150db65chttps://github.com/nats-io/nats-server/commit/79c2f6e9ff87f594596337b6427dda85c38d1fe1https://github.com/nats-io/nats-server/commit/b9ffb63b85e7db3d25a13b2e234f5f7f7c13164dhttps://github.com/nats-io/nats-server/releases/tag/v2.11.16https://github.com/nats-io/nats-server/releases/tag/v2.12.7https://github.com/nats-io/nats-server/releases/tag/v2.14.0https://github.com/nats-io/nats-server/security/advisories/GHSA-jx8g-9g95-6322