ESB-2019.0635 - [Ubuntu] libgd-tools: Multiple vulnerabilities 2019-03-01

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0635
                            GD vulnerabilities
                               1 March 2019

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

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

Product:           libgd-tools
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-6978 CVE-2019-6977 

Reference:         ESB-2019.0480.2
                   ESB-2019.0449
                   ESB-2019.0329
                   ESB-2019.0319
                   ESB-2019.0271

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3900-1

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==========================================================================
Ubuntu Security Notice USN-3900-1
February 28, 2019

libgd2 vulnerabilities
==========================================================================

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

- - Ubuntu 18.10
- - Ubuntu 18.04 LTS
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in GD.

Software Description:
- - libgd2: GD Graphics Library

Details:

It was discovered that GD incorrectly handled memory when processing
certain images. A remote attacker could use this issue with a specially
crafted image file to cause GD to crash, resulting in a denial of service,
or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 18.10:
  libgd-tools                     2.2.5-4ubuntu1.1
  libgd3                          2.2.5-4ubuntu1.1

Ubuntu 18.04 LTS:
  libgd-tools                     2.2.5-4ubuntu0.3
  libgd3                          2.2.5-4ubuntu0.3

Ubuntu 16.04 LTS:
  libgd-tools                     2.1.1-4ubuntu0.16.04.11
  libgd3                          2.1.1-4ubuntu0.16.04.11

Ubuntu 14.04 LTS:
  libgd-tools                     2.1.0-3ubuntu0.11
  libgd3                          2.1.0-3ubuntu0.11

In general, a standard system update will make all the necessary changes.

References:
  https://usn.ubuntu.com/usn/usn-3900-1
  CVE-2019-6977, CVE-2019-6978

Package Information:
  https://launchpad.net/ubuntu/+source/libgd2/2.2.5-4ubuntu1.1
  https://launchpad.net/ubuntu/+source/libgd2/2.2.5-4ubuntu0.3
  https://launchpad.net/ubuntu/+source/libgd2/2.1.1-4ubuntu0.16.04.11
  https://launchpad.net/ubuntu/+source/libgd2/2.1.0-3ubuntu0.11

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