CVE-2013-1854: Symbol DoS vulnerability in Active Record

March 19, 2013 (updated August 8, 2019)

When a hash is provided as the find value for a query, the keys of the hash may be converted to symbols. Carefully crafted requests can coerce params[:name] to return a hash, and the keys to that hash may be converted to symbols. All users running an affected release should either upgrade or use one of the work arounds immediately.

References

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