CVE-2017-12935 Information

Description

The ReadMNGImage function in coders/png.c in GraphicsMagick 1.3.26 mishandles large MNG images leading to an invalid memory read in the SetImageColorCallBack function in magick/image.c.

CVSS Vector

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

Reference

http://hg.code.sf.net/p/graphicsmagick/code/rev/cd699a44f188 https://blogs.gentoo.org/ago/2017/08/05/graphicsmagick-invalid-memory-read-in-setimagecolorcallback-image-c/ https://lists.debian.org/debian-lts-announce/2018/08/msg00002.html https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PF62B5PJA2JDUOCKJGUQO3SPL74BEYSV/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WHIKB4TP6KBJWT2UIPWL5MWMG5QXKGEJ/ https://usn.ubuntu.com/4222-1/ 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