CVE-2018-20467

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-12-26 · updated 2026-06-17
Weakness: CWE-835

Description

In coders/bmp.c in ImageMagick before 7.0.8-16, an input file can result in an infinite loop and hang, with high CPU and memory consumption. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted file.

Affected products

Canonical Ubuntu Linux: 16.04, 18.04, 18.10, 19.04
Debian Linux: 9.0
ImageMagick: before 6.9.10-16; from 7.0.0-0 before 7.0.8-16 — fixed in 6.9.10-16, 7.0.8-16
openSUSE Leap: 15.0

How to fix

Upgrade to a fixed version: ImageMagick 6.9.10-16, 7.0.8-16. Check the vendor advisory for mitigations.

References

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00034.html
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00006.html
http://www.securityfocus.com/bid/106315
https://github.com/ImageMagick/ImageMagick/commit/db0add932fb850d762b02604ca3053b7d7ab6deb
https://github.com/ImageMagick/ImageMagick/issues/1408
https://lists.debian.org/debian-lts-announce/2020/08/msg00030.html
https://usn.ubuntu.com/4034-1/
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00034.html
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00006.html
http://www.securityfocus.com/bid/106315
https://github.com/ImageMagick/ImageMagick/commit/db0add932fb850d762b02604ca3053b7d7ab6deb
https://github.com/ImageMagick/ImageMagick/issues/1408

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