CVE-2018-20189 Information

Description

In GraphicsMagick 1.3.31 the ReadDIBImage function of coders/dib.c has a vulnerability allowing a crash and denial of service via a dib file that is crafted to appear with direct pixel values and also colormapping (which is not available beyond 8-bits/sample) and therefore lacks indexes initialization.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Reference

http://hg.graphicsmagick.org/hg/GraphicsMagick/rev/648e2b406589 http://www.securityfocus.com/bid/106227 https://lists.debian.org/debian-lts-announce/2018/12/msg00018.html https://sourceforge.net/p/graphicsmagick/bugs/585/ https://usn.ubuntu.com/4207-1/ https://www.debian.org/security/2020/dsa-4640

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5