CVE-2020-25664 Memory corruption in ImageMagick

What is CVE-2020-25664?

CVE-2020-25664 is a medium-severity memory corruption vulnerability in Fedoraproject Fedora, 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

In WriteOnePNGImage() of the PNG coder at coders/png.c, an improper call to AcquireVirtualMemory() and memset() allows for an out-of-bounds write later when PopShortPixel() from MagickCore/quantum-private.h is called. The patch fixes the calls by adding 256 to rowbytes. An attacker who is able to supply a specially crafted image could affect availability with a low impact to data integrity. This flaw affects ImageMagick versions prior to 6.9.10-68 and 7.0.8-68.

Weakness: CWE-122

Which versions are affected by CVE-2020-25664?

It affects 2 products.

Products include Fedoraproject Fedora, Imagemagick Imagemagick.

How do I fix CVE-2020-25664?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2020-25664 being exploited?

There is no known exploitation of CVE-2020-25664 in the wild and no public exploit code.

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Sources

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

Also known as DEBIAN-CVE-2020-25664, GHSA-c5hg-hx4v-7q6w, JLSEC-2026-841, UBUNTU-CVE-2020-25664.