INFSA-2025:7331: nginx security update

Information about definition

Identificator: INFSA-2025:7331

Type: security

Release date: 2025-06-10 11:50:46 UTC

Information about package

nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage.

Vulnerabilities description

  • 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.

Severity level

CVE Score CVSS 2.0 Score CVSS 3.x Score CVSS 4.0
no information 4.3 no information
Critical, important, moderate, low

Updated packages