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CVE-2023-47090

Good to know:

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Date: October 29, 2023

NATS nats-server before 2.9.23 and 2.10.x before 2.10.2 has an authentication bypass. An implicit $G user in an authorization block can sometimes be used for unauthenticated access, even when the intention of the configuration was for each user to have an account. The earliest affected version is 2.2.0.

Language: Go

Severity Score

Related Resources (12)

https://advisories.nats.io/CVE/secnote-2023-01.txt
http://www.openwall.com/lists/oss-security/2023/10/30/1
https://github.com/nats-io/nats-server/discussions/4535
https://nvd.nist.gov/vuln/detail/CVE-2023-47090
https://github.com/nats-io/nats-server/commit/fa5b7afcb64e7e887e49afdd032358802b5c4478
https://github.com/nats-io/nats-server/releases/tag/v2.10.2
https://github.com/nats-io/nats-server
https://github.com/nats-io/nats-server/pull/4605
https://github.com/nats-io/nats-server/security/advisories/GHSA-fr2g-9hjm-wr23
https://github.com/nats-io/nats-server/releases/tag/v2.9.23
https://www.openwall.com/lists/oss-security/2023/10/13/2
https://www.mend.io/vulnerability-database/CVE-2023-47090

Severity Score

Weakness Type (CWE)

Authentication Bypass by Primary Weakness

CWE-305

Incorrect Authorization

CWE-863

Top Fix

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Upgrade to version v2.9.23,v2.10.2

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

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