CVE-2017-17915 Information

Description

In GraphicsMagick 1.4 snapshot-20171217 Q8 there is a heap-based buffer over-read in ReadMNGImage in coders/png.c related to accessing one byte before testing whether a limit has been reached.

CVSS Vector

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

Reference

http://hg.graphicsmagick.org/hg/GraphicsMagick/rev/1721f1b7e67a https://lists.debian.org/debian-lts-announce/2018/01/msg00005.html https://lists.debian.org/debian-lts-announce/2018/06/msg00009.html https://sourceforge.net/p/graphicsmagick/bugs/535/ https://usn.ubuntu.com/4266-1/ https://www.debian.org/security/2018/dsa-4321

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8