NATS Server: `no_auth_user` pre-CONNECT fast path bypasses user connection restrictions
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
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| nats-io | nats-server | affected |
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Configuration 1 [-]
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No data.
| Vendor | Product | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nats | Nats Server |
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No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.292% probability within 30 days)
| Type | Values Removed | Values Added |
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| First Time appeared |
Nats
Nats nats Server |
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| Vendors & Products |
Nats
Nats nats Server |
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| Metrics |
ssvc
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| Description | NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.3 and 2.12.12, a client could be registered as the configured no_auth_user through a parser path used when the first client operation was not CONNECT, bypassing user-level connection restrictions such as allowed_connection_types or proxy_required that normal authentication would apply. This issue is fixed in versions 2.14.3 and 2.12.12. | |
| Title | NATS Server: `no_auth_user` pre-CONNECT fast path bypasses user connection restrictions | |
| Weaknesses | CWE-863 | |
| References |
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| Metrics |
cvssV3_1
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