Improper Authentication Affecting nginx-mod-stream package, versions <1:1.26.3-1.amzn2023.0.1


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

Exploit Maturity
Not Defined
EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-AMZN2023-NGINXMODSTREAM-8742371
  • published22 Feb 2025
  • disclosed5 Feb 2025

Introduced: 5 Feb 2025

NewCVE-2025-23419  (opens in a new tab)
CWE-287  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 nginx-mod-stream to version 1:1.26.3-1.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2025-842.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nginx-mod-stream package and not the nginx-mod-stream package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

When multiple server blocks are configured to share the same IP address and port, an attacker can use session resumption to bypass client certificate authentication requirements on these servers. This vulnerability arises when TLS Session Tickets https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_session_ticket_key are used and/or the SSL session cache https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_session_cache are used in the default server and the default server is performing client certificate authentication.  

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVSS Scores

version 3.1