CVE-2020-25666 Integer overflow in ImageMagick

What is CVE-2020-25666?

CVE-2020-25666 is a low-severity vulnerability in Debian Debian Linux, published on 8 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

There are 4 places in HistogramCompare() in MagickCore/histogram.c where an integer overflow is possible during simple math calculations. This occurs in the rgb values and `count` value for a color. The patch uses casts to `ssize_t` type for these calculations, instead of `int`. This flaw could impact application reliability in the event that ImageMagick processes a crafted input file. This flaw affects ImageMagick versions prior to 7.0.9-0.

Weakness: CWE-190

Which versions are affected by CVE-2020-25666?

It affects 2 products.

Products include Debian Debian Linux, Imagemagick Imagemagick.

How do I fix CVE-2020-25666?

Upgrade to a fixed version.

Is CVE-2020-25666 being exploited?

There is no known exploitation of CVE-2020-25666 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-2020-25666, GHSA-c4wq-p3w6-jv54, JLSEC-2026-843, UBUNTU-CVE-2020-25666.