ESB-2017.2216 - [Ubuntu] GD Graphics Library: Execute arbitrary code/commands - Existing account 2017-09-06

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2216
                         GD library vulnerability
                             6 September 2017

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

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

Product:           GD Graphics Library
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
                   Denial of Service               -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-6362  

Reference:         ESB-2017.2200

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3410-1
   http://www.ubuntu.com/usn/usn-3410-2

Comment: This bulletin contains two (2) Ubuntu security advisories.

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==========================================================================
Ubuntu Security Notice USN-3410-1
September 05, 2017

libgd2 vulnerability
==========================================================================

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

- - Ubuntu 17.04
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS

Summary:

GD library could be made to crash if it opened a specially crafted
file.

Software Description:
- - libgd2: GD Graphics Library

Details:

It was discovered a double-free vulnerability in GD library.
A remote attacker could write arbitrary values in memory
spaces or made programs to crash.

Update instructions:

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

Ubuntu 17.04:
  libgd-tools 2.2.4-2ubuntu0.3
  libgd3 2.2.4-2ubuntu0.3

Ubuntu 16.04 LTS:
  libgd-tools 2.1.1-4ubuntu0.16.04.8
  libgd3 2.1.1-4ubuntu0.16.04.8

Ubuntu 14.04 LTS:
  libgd-tools 2.1.0-3ubuntu0.8
  libgd3 2.1.0-3ubuntu0.8

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

References:
  https://www.ubuntu.com/usn/usn-3410-1
  CVE-2017-6362

Package Information:
  https://launchpad.net/ubuntu/+source/libgd2/2.2.4-2ubuntu0.3
  https://launchpad.net/ubuntu/+source/libgd2/2.1.1-4ubuntu0.16.04.8
  https://launchpad.net/ubuntu/+source/libgd2/2.1.0-3ubuntu0.8

==========================================================================
Ubuntu Security Notice USN-3410-2
September 05, 2017

libgd2 vulnerability
==========================================================================

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

- - Ubuntu 12.04 ESM

Summary:

GD library could be made to crash if it opened a specially crafted
file.

Software Description:
- - libgd2: GD Graphics Library

Details:

USN-3410-1 fixed a vulnerability in GD Graphics Library.
This update provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

 It was discovered that the GD Graphics Library (aka libgd) incorrectly
 handled certain malformed PNG images. A remote attacker could use this
 issue to cause the GD Graphics Library 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 12.04 ESM:
  libgd-tools 2.0.36~rc1~dfsg-6ubuntu2.6
  libgd2-noxpm 2.0.36~rc1~dfsg-6ubuntu2.6
  libgd2-xpm 2.0.36~rc1~dfsg-6ubuntu2.6

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

References:
  https://www.ubuntu.com/usn/usn-3410-2
  https://www.ubuntu.com/usn/usn-3410-1
  CVE-2017-6362

- --------------------------END INCLUDED TEXT--------------------

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