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VuXML IDDescription
c79eb109-a754-45d7-b552-a42099eb2265Ruby -- Denial of Service and Unsafe Object Creation Vulnerability in JSON

Aaron Patterson reports:

When parsing certain JSON documents, the JSON gem can be coerced in to creating Ruby symbols in a target system. Since Ruby symbols are not garbage collected, this can result in a denial of service attack.

The same technique can be used to create objects in a target system that act like internal objects. These "act alike" objects can be used to bypass certain security mechanisms and can be used as a spring board for SQL injection attacks in Ruby on Rails.


Discovery 2013-02-11
Entry 2013-02-16
ruby
ge 1.9,1 lt 1.9.3.385,1

rubygem18-json
< 1.7.7

rubygem19-json
< 1.7.7

rubygem18-json_pure
< 1.7.7

rubygem19-json_pure
< 1.7.7

CVE-2013-0269