[USN-4044-1] ZNC vulnerability

[Paulo Flabiano Smorigo]

==========================================================================
Ubuntu Security Notice USN-4044-1
July 01, 2019

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

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

- Ubuntu 19.04
- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

znc could be made to crash or run programs as an administrator
if it opened a specially crafted file.

Software Description:
- znc: advanced modular IRC bouncer

Details:

Fix vulnerability where an authenticated non-admin users could load
a module with a crafted name, then escalate privileges and run
arbitrary code.

Update instructions:

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

Ubuntu 19.04:
  znc                             1.7.2-2ubuntu0.1

Ubuntu 18.10:
  znc                             1.7.1-2ubuntu0.2

Ubuntu 18.04 LTS:
  znc                             1.6.6-1ubuntu0.2

Ubuntu 16.04 LTS:
  znc                             1.6.3-1ubuntu0.2

After a standard system update you need to restart znc to make
all the necessary changes.

References:
  https://usn.ubuntu.com/4044-1
  CVE-2019-12816

Package Information:
  https://launchpad.net/ubuntu/+source/znc/1.7.2-2ubuntu0.1
  https://launchpad.net/ubuntu/+source/znc/1.7.1-2ubuntu0.2
  https://launchpad.net/ubuntu/+source/znc/1.6.6-1ubuntu0.2
  https://launchpad.net/ubuntu/+source/znc/1.6.3-1ubuntu0.2
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