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shrine

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1 actionable advisory, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. Medium, CVSS 5.9RubyGemsPublished

    Possible timing attack in derivation_endpoint

    CVE-2020-15237 · GHSA-5jjv-x4fq-qjwp

    Affected
    • RubyGems shrine < 3.3.0
    Fixed in
    3.3.0· Vendor fix available
    Issue
    Impact When using the derivationendpoint plugin, it's possible for the attacker to use a timing attack to guess the signature of the derivation URL. Patches The problem has been fixed by comparing sent and calculated signature in constant time, using Rack::Utils.securecompare. Users using the derivationendpoint plugin are urged to upgrade to Shrine 3.3.0 or greater. Workarounds Users of older Shrine versions can apply the following monkey-patch after loading the derivationendpoint plugin: References You can read more about timing attacks here.

    Recommended action: Upgrade to 3.3.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →