=========================================================================Ubuntu Security Notice USN-4046-1
July 04, 2019

irssi vulnerabilities
=========================================================================
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:

Several security issues were fixed in Irssi.

Software Description:
- irssi: terminal based IRC client

Details:

It was discovered that Irssi incorrectly handled certain disconnections.
An attacker could possibly use this issue to cause a denial of service
or execute arbitrary code. This issue only affected Ubuntu 18.04 LTS.
(CVE-2018-7054)

It was discovered that Irssi incorrectly handled certain requests.
An attacker could possibly use this issue to cause a denial of service
or execute arbitrary code. (CVE-2019-13045)

Update instructions:

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

Ubuntu 19.04:
  irssi                           1.2.0-2ubuntu1.1

Ubuntu 18.10:
  irssi                           1.1.1-1ubuntu1.2

Ubuntu 18.04 LTS:
  irssi                           1.0.5-1ubuntu4.2

Ubuntu 16.04 LTS:
  irssi                           0.8.19-1ubuntu1.9

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

References:
  https://ubuntu.com/security/notices/USN-4046-1
  CVE-2018-7054, CVE-2019-13045

Package Information:
  https://launchpad.net/ubuntu/+source/irssi/1.2.0-2ubuntu1.1
  https://launchpad.net/ubuntu/+source/irssi/1.1.1-1ubuntu1.2
  https://launchpad.net/ubuntu/+source/irssi/1.0.5-1ubuntu4.2
  https://launchpad.net/ubuntu/+source/irssi/0.8.19-1ubuntu1.9