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Fedora 41 Nginx: 2025-66ebd291f8 moderate: TLS session reuse issue

fedora
Calendar Grey February 15, 2025
Dist Fedora Esm H88
Fedora 41 Update Notification provides nginx security fix and bug details, addressing the TLS session reuse issue and more.
Changes with nginx 1.26.3 05 Feb 2025 *) Security: insufficient check in virtual servers handling with TLSv1.3 SNI allowed to reuse SSL sessions in a different...

Summary

Nginx is a web server and a reverse proxy server for HTTP, SMTP, POP3 and

IMAP protocols, with a strong focus on high concurrency, performance and low

memory usage.

Update Information:

Changes with nginx 1.26.3 05 Feb 2025 *) Security: insufficient check in virtual servers handling with TLSv1.3 SNI allowed to reuse SSL sessions in a different virtual server, to bypass client SSL certificates verification (CVE-2025-23419). *) Bugfix: in the ngx_http_mp4_module. Thanks to Nils Bars. *) Workaround: "gzip filter failed to use preallocated memory" alerts appeared in logs when using zlib-ng. *) Bugfix: nginx could not build libatomic library using the library sources if the --with-libatomic=DIR option was used. *) Bugfix: nginx now ignores QUIC version negotiation packets from clients. *) Bugfix: nginx could not be built on Solaris 10 and earlier with the ngx_http_v3_module. *) Bugfixes in HTTP/3.

Topics%20covered

Topics Covered

security advisory moderate Fedora nginx TLS bugfix SSL session reuse SSL session

Change Log

* Thu Feb 6 2025 Felix Kaechele - 2:1.26.3-1 - update to 1.26.3 - fixes SSL session reuse vulnerability (CVE-2025-23419) - drop zlib-ng patch, the issue was addressed upstream * Wed Feb 5 2025 Luboš Uhliarik - 2:1.26.2-6 - Use systemd-sysusers * Mon Feb 3 2025 Joe Orton - 2:1.26.2-5 - Add systemd instantiated service nginx@.service, allowing e.g. "systemctl start nginx@foobar.service" to start an instance of nginx using /etc/nginx/foobar.conf as the configuration.

References


[ 1 ] Bug #2277663 - please switch to using systemd-sysusers to create the nginx user https://bugzilla.redhat.com/show_bug.cgi?id=2277663 [ 2 ] Bug #2344198 - CVE-2025-23419 nginx: TLS Session Resumption Vulnerability [fedora-41] https://bugzilla.redhat.com/show_bug.cgi?id=2344198

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2025-66ebd291f8' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Name: nginx
Product: Fedora 41
Version: 1.26.3
Release: 1.fc41
URL: https://nginx.org
Summary: A high performance web server and reverse proxy server

Topics%20covered

Topics Covered

security advisory moderate Fedora nginx TLS bugfix SSL session reuse SSL session

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