CVE-2020-27761 Integer overflow in ImageMagick

What is CVE-2020-27761?

CVE-2020-27761 is a low-severity vulnerability in Debian Debian Linux, published on 3 Dec 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official 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.

Weakness: CWE-190

Which versions are affected by CVE-2020-27761?

It affects 2 products.

Products include Debian Debian Linux, Imagemagick Imagemagick.

How do I fix CVE-2020-27761?

Upgrade to a fixed version.

Is CVE-2020-27761 being exploited?

There is no known exploitation of CVE-2020-27761 in the wild and no public exploit code.

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All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2020-27761, GHSA-7vpm-rrmr-qfh6, JLSEC-2026-859, UBUNTU-CVE-2020-27761.