ESB-2018.0667 - [Win][UNIX/Linux][Ubuntu] irssi : Multiple vulnerabilities 2018-03-07

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0667
          Multiple vulnerabilities have been identified in Irssi
                               7 March 2018

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

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           irssi
Publisher:         Ubuntu
Operating System:  Ubuntu
                   Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
                   Access Confidential Data        -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-7073 CVE-2018-7054 CVE-2018-7053
                   CVE-2018-7052 CVE-2018-7051 CVE-2018-7050

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3590-1

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Ubuntu. It is recommended that administrators 
         running irssi check for an updated version of the software for their
         operating system.

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==========================================================================
Ubuntu Security Notice USN-3590-1
March 06, 2018

irssi vulnerabilities
==========================================================================

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

- - Ubuntu 17.10
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 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 empty
nick names. An attacker could possibly use this issue to cause a denial
of service. (CVE-2018-7050)

It was discovered that Irssi incorrectly handled certain nick names.
An attacker could possibly use this to access sensitive information.
(CVE-2018-7051)

It was discovered that Irssi incorrectly handled an increase in the
number of windows. An attacker could possibly use this issue to cause
a denial of service. (CVE-2018-7052)

It was discovered that Irssi incorrectly handled certain messages.
An attacker could possibly use this issue to cause a denial of service
or execute arbitrary code. This issue only affected Ubuntu 16.04 LTS
and Ubuntu 17.10. (CVE-2018-7053)

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

Update instructions:

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

Ubuntu 17.10:
  irssi            1.0.4-1ubuntu2.3

Ubuntu 16.04 LTS:
  irssi            0.8.19-1ubuntu1.7

Ubuntu 14.04 LTS:
  irssi            0.8.15-5ubuntu3.5

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

References:
  https://usn.ubuntu.com/usn/usn-3590-1
  CVE-2018-7050, CVE-2018-7051, CVE-2018-7052, CVE-2018-7053,
  CVE-2018-7054, CVE-2018-7073

Package Information:
  https://launchpad.net/ubuntu/+source/irssi/1.0.4-1ubuntu2.3
  https://launchpad.net/ubuntu/+source/irssi/0.8.19-1ubuntu1.7
  https://launchpad.net/ubuntu/+source/irssi/0.8.15-5ubuntu3.5

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