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Vulnerability of GraphicsMagick: NULL pointer dereference via ReadOneJNGImage

Synthesis of the vulnerability 

An attacker can force a NULL pointer to be dereferenced via ReadOneJNGImage() of GraphicsMagick, in order to trigger a denial of service.
Vulnerable software: Debian, openSUSE Leap, Solaris, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this announce: 2/4.
Creation date: 25/09/2018.
Références of this computer vulnerability: bulletinoct2018, CVE-2018-16749, DLA-1530-1, DLA-2366-1, openSUSE-SU-2018:2833-1, openSUSE-SU-2018:3203-1, RHSA-2020:1180-01, SUSE-SU-2018:3095-1, SUSE-SU-2018:3269-1, SUSE-SU-2018:3348-1, USN-3785-1, VIGILANCE-VUL-27307.

Description of the vulnerability 

An attacker can force a NULL pointer to be dereferenced via ReadOneJNGImage() of GraphicsMagick, in order to trigger a denial of service.
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This computer threat bulletin impacts software or systems such as Debian, openSUSE Leap, Solaris, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this security threat 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 computer vulnerability alert.

Solutions for this threat 

Debian 8: new imagemagick packages.
New packages are available:
  Debian 8: imagemagick 8:6.8.9.9-5+deb8u14

Debian 9: new imagemagick packages (08/09/2020).
New packages are available:
  Debian 9: imagemagick 8:6.9.7.4+dfsg-11+deb9u10

openSUSE Leap 42.3: new GraphicsMagick packages.
New packages are available:
  openSUSE Leap 42.3: GraphicsMagick 1.3.25-108.1

openSUSE Leap 42.3: new ImageMagick packages (18/10/2018).
New packages are available:
  openSUSE Leap 42.3: ImageMagick 6.8.8.1-70.2

Oracle Solaris: patch for third party software of October 2018 v3.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

RHEL 7: new ImageMagick packages.
New packages are available:
  RHEL 7.0-7.7: ImageMagick 6.9.10.68-3.el7

SUSE LE 11 SP4: new GraphicsMagick packages.
New packages are available:
  SUSE LE 11 SP4: GraphicsMagick 1.2.5-78.72.1

SUSE LE 11 SP4: new ImageMagick packages (24/10/2018).
New packages are available:
  SUSE LE 11 SP4: ImageMagick 6.4.3.6-78.74.1

SUSE LE 12 SP3: new ImageMagick packages (11/10/2018).
New packages are available:
  SUSE LE 12 SP3: ImageMagick 6.8.8.1-71.79.1

Ubuntu: new imagemagick packages.
New packages are available:
  Ubuntu 18.04 LTS: imagemagick 8:6.9.7.4+dfsg-16ubuntu6.4
  Ubuntu 16.04 LTS: imagemagick 8:6.8.9.9-7ubuntu5.13
  Ubuntu 14.04 LTS: imagemagick 8:6.7.7.10-6ubuntu3.13

Wind River Linux: solution (28/11/2018).
The solution is indicated in information sources.
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