[USN-6990-1] znc vulnerability

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==============================

============================================
Ubuntu Security Notice USN-6990-1
September 04, 2024

znc vulnerability
==========================================================================

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

- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

znc could be made to execute arbitrary code on a user's system if
they were persuaded to join a malicious server.

Software Description:
- znc: advanced modular IRC bouncer

Details:

Johannes Kuhn (DasBrain) discovered that znc incorrectly handled
user input under certain operations. An attacker could possibly
use this issue to execute arbitrary code on a user's system if
the user was tricked into joining a malicious server.

Update instructions:

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

Ubuntu 24.04 LTS
  znc                             1.9.0-2ubuntu0.1~esm2
                                  Available with Ubuntu Pro
  znc-dev                         1.9.0-2ubuntu0.1~esm2
                                  Available with Ubuntu Pro
  znc-perl                        1.9.0-2ubuntu0.1~esm2
                                  Available with Ubuntu Pro
  znc-python                      1.9.0-2ubuntu0.1~esm2
                                  Available with Ubuntu Pro
  znc-tcl                         1.9.0-2ubuntu0.1~esm2
                                  Available with Ubuntu Pro

Ubuntu 22.04 LTS
  znc                             1.8.2-2ubuntu0.1
  znc-dev                         1.8.2-2ubuntu0.1
  znc-perl                        1.8.2-2ubuntu0.1
  znc-python                      1.8.2-2ubuntu0.1
  znc-tcl                         1.8.2-2ubuntu0.1

Ubuntu 20.04 LTS
  znc                             1.7.5-4ubuntu0.1~esm2
                                  Available with Ubuntu Pro
  znc-dev                         1.7.5-4ubuntu0.1~esm2
                                  Available with Ubuntu Pro
  znc-perl                        1.7.5-4ubuntu0.1~esm2
                                  Available with Ubuntu Pro
  znc-python                      1.7.5-4ubuntu0.1~esm2
                                  Available with Ubuntu Pro
  znc-tcl                         1.7.5-4ubuntu0.1~esm2
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  znc                             1.6.6-1ubuntu0.2+esm2
                                  Available with Ubuntu Pro
  znc-dev                         1.6.6-1ubuntu0.2+esm2
                                  Available with Ubuntu Pro
  znc-perl                        1.6.6-1ubuntu0.2+esm2
                                  Available with Ubuntu Pro
  znc-python                      1.6.6-1ubuntu0.2+esm2
                                  Available with Ubuntu Pro
  znc-tcl                         1.6.6-1ubuntu0.2+esm2
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  znc                             1.6.3-1ubuntu0.2+esm2
                                  Available with Ubuntu Pro
  znc-dev                         1.6.3-1ubuntu0.2+esm2
                                  Available with Ubuntu Pro
  znc-perl                        1.6.3-1ubuntu0.2+esm2
                                  Available with Ubuntu Pro
  znc-python                      1.6.3-1ubuntu0.2+esm2
                                  Available with Ubuntu Pro
  znc-tcl                         1.6.3-1ubuntu0.2+esm2
                                  Available with Ubuntu Pro

Ubuntu 14.04 LTS
  znc                             1.2-3ubuntu0.1+esm3
                                  Available with Ubuntu Pro
  znc-dev                         1.2-3ubuntu0.1+esm3
                                  Available with Ubuntu Pro
  znc-perl                        1.2-3ubuntu0.1+esm3
                                  Available with Ubuntu Pro
  znc-python                      1.2-3ubuntu0.1+esm3
                                  Available with Ubuntu Pro
  znc-tcl                         1.2-3ubuntu0.1+esm3
                                  Available with Ubuntu Pro

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

References:
  https://ubuntu.com/security/notices/USN-6990-1
  CVE-2024-39844

Package Information:
  https://launchpad.net/ubuntu/+source/znc/1.8.2-2ubuntu0.1