What’s Vulnerable › Vulnerabilities
CVE-2020-27760
- Severity: medium (CVSS 5.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2020-12-03 · updated 2026-06-17
- Weakness: CWE-369
Description
In `GammaImage()` of /MagickCore/enhance.c, depending on the `gamma` value, it's possible to trigger a divide-by-zero condition when a crafted input file is processed by ImageMagick. This could lead to an impact to application availability. The patch uses the `PerceptibleReciprocal()` to prevent the divide-by-zero from occurring. This flaw affects ImageMagick versions prior to ImageMagick 7.0.8-68.
Affected products
- Debian Linux: 9.0
- ImageMagick: before 6.9.10-68; from 7.0.0-0 before 7.0.8-68 — fixed in 6.9.10-68, 7.0.8-68
How to fix
Upgrade to a fixed version: ImageMagick 6.9.10-68, 7.0.8-68. Check the vendor advisory for mitigations.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1894239
- https://lists.debian.org/debian-lts-announce/2021/01/msg00010.html
- https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1894239
- https://lists.debian.org/debian-lts-announce/2021/01/msg00010.html
- https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html
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