This update fixes several vulnerabilities in Graphicsmagick: Various memory handling problems and cases of missing or incomplete input sanitising may result in denial of service, memory disclosure or the execution of arbitrary code if malformed media files are processed.
For the oldstable distribution (stretch), these problems have been fixed in version 1.3.30+hg15796-1~deb9u3.
For the stable distribution (buster), these problems have been fixed in version 1.4~hg15978-1+deb10u1.
We recommend that you upgrade your graphicsmagick packages.
Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/