![]() ![]() The infamous vulnerabilities affecting the library over the years produced a number of urgent security fixes and workarounds involving the addition of policy items excluding the affected formats and features (ImageTragick in 2016, RCE via GhostScript in 2018, shell injection via PDF password in 2020, in 2021). ImageMagick supports over 100 major file formats (not including sub-formats) types of image formats.According to the docs, “this affords maximum utility for ImageMagick installations that run in a sandboxed environment, perhaps in a Docker instance, or behind a firewall where security risks are greatly diminished as compared to a public website.” A secure strict policy is also made available, however as noted in the past not always is well configured. By default, ImageMagick comes with an unrestricted policy that must be tuned by the developers depending on their use. While the architectural complexity and the granularity of options definable by the policy are the major obstacles for a newbie, the corresponding knowledge base could be more welcoming. Its options are only generally described on the online documentation page of the library, with no clear breakdown of what each security directive allowed by the policy is regulating.In the wild, these files often contain a plethora of recommendations cargo cultured from around the internet. ImageMagick Security Policy Evaluator - Posted by Lorenzo Stellaĭuring our audits we occasionally stumble across ImageMagick security policy configuration files ( policy.xml), useful for limiting the default behavior and the resources consumed by the library. ![]()
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