Amazon Linux 2 Security Advisory: ALASNGINX1-2025-008
Advisory Release Date: 2025-03-13 01:32 Pacific
Advisory Updated Date: 2025-03-26 12:39 Pacific
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. (CVE-2025-23419)
Affected Packages:
nginx
Note:
This advisory is applicable to Amazon Linux 2 - Nginx1 Extra. Visit this page to learn more about Amazon Linux 2 (AL2) Extras and this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update nginx to update your system.
aarch64:
nginx-1.26.3-1.amzn2.0.1.aarch64
nginx-core-1.26.3-1.amzn2.0.1.aarch64
nginx-mod-http-geoip-1.26.3-1.amzn2.0.1.aarch64
nginx-mod-http-image-filter-1.26.3-1.amzn2.0.1.aarch64
nginx-mod-http-perl-1.26.3-1.amzn2.0.1.aarch64
nginx-mod-http-xslt-filter-1.26.3-1.amzn2.0.1.aarch64
nginx-mod-mail-1.26.3-1.amzn2.0.1.aarch64
nginx-mod-stream-1.26.3-1.amzn2.0.1.aarch64
nginx-mod-devel-1.26.3-1.amzn2.0.1.aarch64
nginx-debuginfo-1.26.3-1.amzn2.0.1.aarch64
noarch:
nginx-all-modules-1.26.3-1.amzn2.0.1.noarch
nginx-filesystem-1.26.3-1.amzn2.0.1.noarch
src:
nginx-1.26.3-1.amzn2.0.1.src
x86_64:
nginx-1.26.3-1.amzn2.0.1.x86_64
nginx-core-1.26.3-1.amzn2.0.1.x86_64
nginx-mod-http-geoip-1.26.3-1.amzn2.0.1.x86_64
nginx-mod-http-image-filter-1.26.3-1.amzn2.0.1.x86_64
nginx-mod-http-perl-1.26.3-1.amzn2.0.1.x86_64
nginx-mod-http-xslt-filter-1.26.3-1.amzn2.0.1.x86_64
nginx-mod-mail-1.26.3-1.amzn2.0.1.x86_64
nginx-mod-stream-1.26.3-1.amzn2.0.1.x86_64
nginx-mod-devel-1.26.3-1.amzn2.0.1.x86_64
nginx-debuginfo-1.26.3-1.amzn2.0.1.x86_64