What’s Vulnerable › Vulnerabilities

CVE-2020-27761

• Severity: low (CVSS 3.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% 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-190

Description

WritePALMImage() in /coders/palm.c used size_t casts in several areas of a calculation which could lead to values outside the range of representable type `unsigned long` undefined behavior when a crafted input file was processed by ImageMagick. The patch casts to `ssize_t` instead to avoid this issue. Red Hat Product Security marked the Severity as Low because although it could potentially lead to an impact to application availability, no specific impact was shown in this case. This flaw affects ImageMagick versions prior to ImageMagick 7.0.9-0.

Affected products

• Debian Linux: 9.0
• ImageMagick: before 6.9.10-69; from 7.0.0-0 before 7.0.9-0 — fixed in 6.9.10-69, 7.0.9-0

How to fix

Upgrade to a fixed version: ImageMagick 6.9.10-69, 7.0.9-0. Check the vendor advisory for mitigations.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1894679
• https://lists.debian.org/debian-lts-announce/2021/03/msg00030.html
• https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html
• https://bugzilla.redhat.com/show_bug.cgi?id=1894679
• https://lists.debian.org/debian-lts-announce/2021/03/msg00030.html
• https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html

Get alerted when CVE-2020-27761 or the next vulnerability affects your stack