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Vulnerability of GraphicsMagick: out-of-bounds memory reading via ReadBMPImage

Synthesis of the vulnerability

An attacker can force a read at an invalid address via ReadBMPImage() of GraphicsMagick, in order to trigger a denial of service, or to obtain sensitive information.
Severity of this weakness: 2/4.
Creation date: 27/12/2018.
Références of this bulletin: CVE-2018-20185, DLA-1619-1, SUSE-SU-2019:13923-1, USN-4207-1, VIGILANCE-VUL-28110.

Description of the vulnerability

An attacker can force a read at an invalid address via ReadBMPImage() of GraphicsMagick, in order to trigger a denial of service, or to obtain sensitive information.
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This computer threat alert impacts software or systems such as Debian, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this weakness announce 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 weakness bulletin.

Solutions for this threat

Debian 8: new graphicsmagick packages.
New packages are available:
  Debian 8: graphicsmagick 1.3.20-3+deb8u5

SUSE LE 11 SP4: new GraphicsMagick packages.
New packages are available:
  SUSE LE 11 SP4: GraphicsMagick 1.2.5-78.78.1

Ubuntu 18.04: new graphicsmagick packages.
New packages are available:
  Ubuntu 18.04 LTS: graphicsmagick 1.3.28-2ubuntu0.1
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