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==========================================================================
Ubuntu Security Notice USN-7285-2
April 01, 2025

nginx vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.04 LTS

Summary:

nginx could be made to bypass client certificate authentication
requirements.

Software Description:
- nginx: small, powerful, scalable web/proxy server

Details:

USN-7285-1 fixed vulnerabilities in nginx.
This update provides the corresponding updates for Ubuntu 24.04 LTS.

Original advisory details:

 It was discovered that nginx incorrectly handled when multiple
 server blocks are configured to share the same IP address and port.
 An attacker could use this issue to use session resumption to bypass
 client certificate authentication requirements on these servers.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 24.04 LTS
  nginx                           1.24.0-2ubuntu7.3
  nginx-common                    1.24.0-2ubuntu7.3
  nginx-core                      1.24.0-2ubuntu7.3
  nginx-extras                    1.24.0-2ubuntu7.3
  nginx-full                      1.24.0-2ubuntu7.3
  nginx-light                     1.24.0-2ubuntu7.3

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-7285-2
  https://ubuntu.com/security/notices/USN-7285-1
  CVE-2025-23419

Package Information:
  https://launchpad.net/ubuntu/+source/nginx/1.24.0-2ubuntu7.3


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