Out-of-bounds read in ImageMagick and Debian Linux - CVE-2018-18025

Vulnerability identifier: #VU33485

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2018-18025

CWE-ID: CWE-125

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to heap-based buffer over-read in the EncodeImage function of coders/pict.c, which allows attackers to cause a denial of service via a crafted SVG image file. A remote attacker can perform a denial of service attack.

ImageMagick
Debian Linux
Ubuntu
imagemagick6 (Alpine package)
imagemagick (Ubuntu package)
libmagick++-dev (Ubuntu package)
libmagick++5 (Ubuntu package)
libmagickcore-dev (Ubuntu package)
libmagickcore5 (Ubuntu package)
libmagickcore5-extra (Ubuntu package)
libmagickwand-dev (Ubuntu package)
libmagickwand5 (Ubuntu package)
perlmagick (Ubuntu package)

Install update from vendor's website.

imagemagick6 (Alpine package) - update to 6.9.10.37-r0
imagemagick (Ubuntu package) - update to Ubuntu Pro (Infra-only)
libmagick++-dev (Ubuntu package) - update to Ubuntu Pro (Infra-only)
libmagick++5 (Ubuntu package) - update to Ubuntu Pro (Infra-only)
libmagickcore-dev (Ubuntu package) - update to Ubuntu Pro (Infra-only)
libmagickcore5 (Ubuntu package) - update to Ubuntu Pro (Infra-only)
libmagickcore5-extra (Ubuntu package) - update to Ubuntu Pro (Infra-only)
libmagickwand-dev (Ubuntu package) - update to Ubuntu Pro (Infra-only)
libmagickwand5 (Ubuntu package) - update to Ubuntu Pro (Infra-only)
perlmagick (Ubuntu package) - update to Ubuntu Pro (Infra-only)

• https://github.com/ImageMagick/ImageMagick/issues/1335
• https://lists.debian.org/debian-lts-announce/2018/11/msg00014.html
• https://usn.ubuntu.com/4034-1/

• Out-of-bounds read in ImageMagick
• Out-of-bounds read in imagemagick6 (Alpine package)
• Ubuntu update for imagemagick