CVE-2025-23419

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.
References
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx_plus:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx_plus:r32:-:*:*:*:*:*:*
cpe:2.3:a:f5:nginx_plus:r32:p1:*:*:*:*:*:*
cpe:2.3:a:f5:nginx_plus:r33:-:*:*:*:*:*:*
cpe:2.3:a:f5:nginx_plus:r33:p1:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

History

12 Nov 2025, 14:50

Type Values Removed Values Added
First Time Debian debian Linux
F5
F5 nginx Plus
F5 nginx
Debian
CWE CWE-613
References () https://my.f5.com/manage/s/article/K000149173 - () https://my.f5.com/manage/s/article/K000149173 - Vendor Advisory
References () http://www.openwall.com/lists/oss-security/2025/02/05/8 - () http://www.openwall.com/lists/oss-security/2025/02/05/8 - Mailing List, Third Party Advisory
References () https://lists.debian.org/debian-lts-announce/2025/03/msg00017.html - () https://lists.debian.org/debian-lts-announce/2025/03/msg00017.html - Issue Tracking, Third Party Advisory
CPE cpe:2.3:a:f5:nginx_plus:r33:-:*:*:*:*:*:*
cpe:2.3:a:f5:nginx_plus:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx_plus:r32:p1:*:*:*:*:*:*
cpe:2.3:a:f5:nginx_plus:r32:-:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx_plus:r33:p1:*:*:*:*:*:*

03 Nov 2025, 21:19

Type Values Removed Values Added
References
  • () https://lists.debian.org/debian-lts-announce/2025/03/msg00017.html -
Summary
  • (es) Cuando se configuran varios bloques de servidores para compartir la misma dirección IP y puerto, un atacante puede usar la reanudación de sesión para eludir los requisitos de autenticación de certificados de cliente en estos servidores. Esta vulnerabilidad surge cuando se utilizan tickets de sesión TLS https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_session_ticket_key y/o se utiliza la caché de sesión SSL https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_session_cache en el servidor predeterminado y este está realizando la autenticación de certificados de cliente. Nota: Las versiones de software que han llegado al final del soporte técnico (EoTS) no se evalúan.

05 Feb 2025, 20:15

Type Values Removed Values Added
References
  • () http://www.openwall.com/lists/oss-security/2025/02/05/8 -

05 Feb 2025, 18:15

Type Values Removed Values Added
New CVE

Information

Published : 2025-02-05 18:15

Updated : 2025-11-12 14:50


NVD link : CVE-2025-23419

Mitre link : CVE-2025-23419

CVE.ORG link : CVE-2025-23419


JSON object : View

Products Affected

f5

  • nginx
  • nginx_plus

debian

  • debian_linux
CWE
CWE-287

Improper Authentication

CWE-613

Insufficient Session Expiration