shrinerb/shrine

shrinerb/shrine

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File Attachment toolkit for Ruby applications
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CVE History

CVEPublishedCVSS v3CVSS v2
CVE-2020-15237↗
5.9 MEDIUM4.3 MEDIUM

In Shrine before version 3.3.0, when using the `derivation_endpoint` plugin, it's possible for the attacker to use a timing attack to guess the signature of the derivation URL. The problem has been fixed by comparing sent and calculated signature in constant time, using `Rack::Utils.secure_compare`. Users using the `derivation_endpoint` plugin are urged to upgrade to Shrine 3.3.0 or greater. A possible workaround is provided in the linked advisory.