CVE-2020-27776 Integer overflow in ImageMagick

What is CVE-2020-27776?

CVE-2020-27776 is a low-severity vulnerability in Imagemagick Imagemagick, published on 4 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

A flaw was found in ImageMagick in MagickCore/statistic.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of values outside the range of type unsigned long. This would most likely lead to an impact to application availability, but could potentially cause other problems related to undefined behavior. This flaw affects ImageMagick versions prior to 7.0.9-0.

Weakness: CWE-190

Which versions are affected by CVE-2020-27776?

It affects 2 products.

Products include Imagemagick Imagemagick, Redhat Enterprise Linux.

How do I fix CVE-2020-27776?

Upgrade to a fixed version.

Is CVE-2020-27776 being exploited?

There is no known exploitation of CVE-2020-27776 in the wild and no public exploit code.

Other vulnerabilities in Imagemagick Imagemagick

• CVE-2019-19952 Use after free in n/a Critical 9.8
• CVE-2018-16328 Null dereference in n/a Critical 9.8
• CVE-2018-16329 Null dereference in n/a Critical 9.8
• CVE-2017-18210 Null dereference in n/a Critical 9.8
• CVE-2017-14138 Denial of service in n/a Critical 9.8

All Imagemagick Imagemagick vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2020-27776, GHSA-g4x4-6g36-hgrp, JLSEC-2026-874, UBUNTU-CVE-2020-27776.