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Ubuntu 24.10 USN-7285-1 critical: nginx session bypass and buffer overflow

ubuntu
Calendar Grey February 24, 2025
Dist Ubuntu Esm H88
Multiple security issues were fixed in nginx for Ubuntu versions. Follow the guidance for necessary updates.
Several security issues were fixed in nginx.

Summary

Several security issues were fixed in nginx.

Software Description:

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

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.

This issue only affected Ubuntu 24.10.

A buffer overflow and a null pointer deref was fixed in nginx rtmp module

(#LP 1977718). This issue only affected Ubuntu 20.04 LTS and

Ubuntu 22.04 LTS.

Topics%20covered

Topics Covered

security advisory buffer overflow Ubuntu software fix update instructions authentication ubuntu nginx web server session bypass session resumption

Update Instructions

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

Ubuntu 24.10
  nginx                           1.26.0-2ubuntu3.2
  nginx-common                    1.26.0-2ubuntu3.2
  nginx-core                      1.26.0-2ubuntu3.2
  nginx-dev                       1.26.0-2ubuntu3.2
  nginx-doc                       1.26.0-2ubuntu3.2
  nginx-extras                    1.26.0-2ubuntu3.2
  nginx-full                      1.26.0-2ubuntu3.2
  nginx-light                     1.26.0-2ubuntu3.2

Ubuntu 22.04 LTS
  libnginx-mod-rtmp               1.18.0-6ubuntu14.6
  nginx                           1.18.0-6ubuntu14.6
  nginx-common                    1.18.0-6ubuntu14.6
  nginx-core                      1.18.0-6ubuntu14.6
  nginx-doc                       1.18.0-6ubuntu14.6
  nginx-extras                    1.18.0-6ubuntu14.6
  nginx-full                      1.18.0-6ubuntu14.6
  nginx-light                     1.18.0-6ubuntu14.6

Ubuntu 20.04 LTS
  libnginx-mod-rtmp               1.18.0-0ubuntu1.7
  nginx                           1.18.0-0ubuntu1.7
  nginx-common                    1.18.0-0ubuntu1.7
  nginx-core                      1.18.0-0ubuntu1.7
  nginx-doc                       1.18.0-0ubuntu1.7
  nginx-extras                    1.18.0-0ubuntu1.7
  nginx-full                      1.18.0-0ubuntu1.7
  nginx-light                     1.18.0-0ubuntu1.7

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

References

https://ubuntu.com/security/notices/USN-7285-1

CVE-2025-23419, https://bugs.launchpad.net/ubuntu/+source/nginx/+bug/1977718

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7285-1

Topics%20covered

Topics Covered

security advisory buffer overflow Ubuntu software fix update instructions authentication ubuntu nginx web server session bypass session resumption

Package Information

https://launchpad.net/ubuntu/+source/nginx/1.26.0-2ubuntu3.2
https://launchpad.net/ubuntu/+source/nginx/1.18.0-6ubuntu14.6
https://launchpad.net/ubuntu/+source/nginx/1.18.0-0ubuntu1.7

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