=========================================================================
Ubuntu Security Notice USN-5722-1
November 15, 2022

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

- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM

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 certain memory operations in
the ngx_http_mp4_module module. A local attacker could possibly use this issue
with a specially crafted mp4 file to cause nginx to crash, stop responding, or
access arbitrary memory. (CVE-2022-41741, CVE-2022-41742)

Update instructions:

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

Ubuntu 22.10:
  nginx                           1.22.0-1ubuntu1.1
  nginx-common                    1.22.0-1ubuntu1.1
  nginx-core                      1.22.0-1ubuntu1.1
  nginx-extras                    1.22.0-1ubuntu1.1
  nginx-full                      1.22.0-1ubuntu1.1
  nginx-light                     1.22.0-1ubuntu1.1

Ubuntu 22.04 LTS:
  nginx                           1.18.0-6ubuntu14.3
  nginx-common                    1.18.0-6ubuntu14.3
  nginx-core                      1.18.0-6ubuntu14.3
  nginx-extras                    1.18.0-6ubuntu14.3
  nginx-full                      1.18.0-6ubuntu14.3
  nginx-light                     1.18.0-6ubuntu14.3

Ubuntu 20.04 LTS:
  nginx                           1.18.0-0ubuntu1.4
  nginx-common                    1.18.0-0ubuntu1.4
  nginx-core                      1.18.0-0ubuntu1.4
  nginx-extras                    1.18.0-0ubuntu1.4
  nginx-full                      1.18.0-0ubuntu1.4
  nginx-light                     1.18.0-0ubuntu1.4

Ubuntu 18.04 LTS:
  nginx                           1.14.0-0ubuntu1.11
  nginx-common                    1.14.0-0ubuntu1.11
  nginx-core                      1.14.0-0ubuntu1.11
  nginx-extras                    1.14.0-0ubuntu1.11
  nginx-full                      1.14.0-0ubuntu1.11
  nginx-light                     1.14.0-0ubuntu1.11

Ubuntu 16.04 ESM:
  nginx                           1.10.3-0ubuntu0.16.04.5+esm5
  nginx-common                    1.10.3-0ubuntu0.16.04.5+esm5
  nginx-core                      1.10.3-0ubuntu0.16.04.5+esm5
  nginx-extras                    1.10.3-0ubuntu0.16.04.5+esm5
  nginx-full                      1.10.3-0ubuntu0.16.04.5+esm5
  nginx-light                     1.10.3-0ubuntu0.16.04.5+esm5

Ubuntu 14.04 ESM:
  nginx                           1.4.6-1ubuntu3.9+esm4
  nginx-common                    1.4.6-1ubuntu3.9+esm4
  nginx-core                      1.4.6-1ubuntu3.9+esm4
  nginx-extras                    1.4.6-1ubuntu3.9+esm4
  nginx-full                      1.4.6-1ubuntu3.9+esm4
  nginx-light                     1.4.6-1ubuntu3.9+esm4

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

References:
  https://ubuntu.com/security/notices/USN-5722-1
  CVE-2022-41741, CVE-2022-41742

Package Information:
  https://launchpad.net/ubuntu/+source/nginx/1.22.0-1ubuntu1.1
  https://launchpad.net/ubuntu/+source/nginx/1.18.0-6ubuntu14.3
  https://launchpad.net/ubuntu/+source/nginx/1.18.0-0ubuntu1.4
  https://launchpad.net/ubuntu/+source/nginx/1.14.0-0ubuntu1.11