USN-3317-1: Irssi vulnerabilities

Ubuntu Security Notice USN-3317-1

12th June, 2017

irssi vulnerabilities

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

  • Ubuntu 17.04
  • Ubuntu 16.10
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Irssi could be made to crash if it received specially crafted network
traffic.

Software description

  • irssi
    – terminal based IRC client

Details

It was discovered that Irssi incorrectly handled certain DCC messages. A
malicious IRC server could use this issue to cause Irssi to crash,
resulting in a denial of service. (CVE-2017-9468)

Joseph Bisch discovered that Irssi incorrectly handled receiving
incorrectly quoted DCC files. A remote attacker could possibly use this
issue to cause Irssi to crash, resulting in a denial of service.
(CVE-2017-9469)

Update instructions

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

Ubuntu 17.04:
irssi

0.8.20-2ubuntu2.1
Ubuntu 16.10:
irssi

0.8.19-1ubuntu2.2
Ubuntu 16.04 LTS:
irssi

0.8.19-1ubuntu1.4
Ubuntu 14.04 LTS:
irssi

0.8.15-5ubuntu3.2

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2017-9468,

CVE-2017-9469

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