CVE-2020-27770 Integer overflow in ImageMagick

What is CVE-2020-27770?

CVE-2020-27770 is a medium-severity vulnerability in Debian Debian Linux, 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

Due to a missing check for 0 value of `replace_extent`, it is possible for offset `p` to overflow in SubstituteString(), causing potential impact to application availability. This could be triggered by a crafted input file that is processed by ImageMagick. This flaw affects ImageMagick versions prior to 7.0.8-68.

Weakness: CWE-190

Which versions are affected by CVE-2020-27770?

It affects 2 products.

Products include Debian Debian Linux, Imagemagick Imagemagick.

How do I fix CVE-2020-27770?

Upgrade to a fixed version.

Is CVE-2020-27770 being exploited?

There is no known exploitation of CVE-2020-27770 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-2020-27770, GHSA-229f-wq39-p955, JLSEC-2026-868, UBUNTU-CVE-2020-27770.