CVE-2018-20189

Severity: medium (CVSS 6.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-12-17 · updated 2026-06-17
Weakness: CWE-20

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.

Affected products

Debian Linux: 8.0
GraphicsMagick: 1.3.31

References

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
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

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