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Vulnerability of libgd: buffer overflow via dynamicGetbuf

Synthesis of the vulnerability 

An attacker can generate a buffer overflow via dynamicGetbuf of libgd, in order to trigger a denial of service, and possibly to run code.
Impacted systems: Mac OS X, Debian, Fedora, openSUSE, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this alert: 2/4.
Creation date: 19/10/2016.
Références of this alert: CVE-2016-8670, DLA-665-1, FEDORA-2016-722c0afc64, FEDORA-2016-e45a7e7b13, HT207483, openSUSE-SU-2016:2606-1, openSUSE-SU-2016:2772-1, openSUSE-SU-2016:2831-1, openSUSE-SU-2016:2837-1, SUSE-SU-2016:2460-2, SUSE-SU-2016:2668-1, SUSE-SU-2016:2683-1, SUSE-SU-2016:2683-2, SUSE-SU-2016:2766-1, USN-3117-1, VIGILANCE-VUL-20915.

Description of the vulnerability 

An attacker can generate a buffer overflow via dynamicGetbuf of libgd, in order to trigger a denial of service, and possibly to run code.
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This computer weakness announce impacts software or systems such as Mac OS X, Debian, Fedora, openSUSE, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this security alert is medium.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this vulnerability.

Solutions for this threat 

Apple macOS: version 10.12.3.
The version 10.12.3 is fixed:
  https://support.apple.com/

Debian 7: new libgd2 packages.
New packages are available:
  Debian 7: libgd2 2.0.36~rc1~dfsg-6.1+deb7u6

Fedora: new gd packages.
New packages are available:
  Fedora 25: gd 2.2.3-5.fc25
  Fedora 24: gd 2.2.3-5.fc24

openSUSE 13.2: new php5 packages.
New packages are available:
  openSUSE 13.2: apache2-mod_php5 5.6.1-83.1, php5 5.6.1-83.1

openSUSE Leap 42.1: new gd packages.
New packages are available:
  openSUSE Leap 42.1: gd 2.1.0-13.1

openSUSE Leap: new php5 packages.
New packages are available:
  openSUSE Leap 42.1: apache2-mod_php5 5.5.14-65.2, php5 5.5.14-65.2
  openSUSE Leap 42.2: apache2-mod_php5 5.5.14-65.1, php5 5.5.14-65.1

SUSE LE 12: new gd packages.
New packages are available:
  SUSE LE 12 SP1: gd 2.1.0-17.1

SUSE LE 12: new php5 packages.
New packages are available:
  SUSE LE 12 RTM-SP2: apache2-mod_php5 5.5.14-83.1, php5 5.5.14-83.1

SUSE LE 12 SP2: new php7 packages.
New packages are available:
  SUSE LE 12 SP2: apache2-mod_php7 7.0.7-20.1, php7 7.0.7-20.1

Ubuntu: new libgd3 packages.
New packages are available:
  Ubuntu 16.10: libgd3 2.2.1-1ubuntu3.2
  Ubuntu 16.04 LTS: libgd3 2.1.1-4ubuntu0.16.04.5
  Ubuntu 14.04 LTS: libgd3 2.1.0-3ubuntu0.5
  Ubuntu 12.04 LTS: libgd2 2.0.36~rc1~dfsg-6ubuntu2.3
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