Ubuntu Security Notice 3184-1 – It was discovered that the Irssi buf.pl script set incorrect permissions. A local attacker could use this issue to retrieve another user’s window contents. Joseph Bisch discovered that Irssi incorrectly handled comparing nicks. A remote attacker could use this issue to cause Irssi to crash, resulting in a denial of service, or possibly execute arbitrary code. It was discovered that Irssi incorrectly handled invalid nick messages. A remote attacker could use this issue to cause Irssi to crash, resulting in a denial of service, or possibly execute arbitrary code. Various other issues were also addressed.