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Improper Input Validation


Severity Medium
Score 4.3/10


The "to_s" method in "actionpack/lib/action_dispatch/middleware/remote_ip.rb" in Ruby on Rails 2.3.0 through 2.3.12 does not validate the X-Forwarded-For header in requests from IP addresses on a Class C network, which might allow remote attackers to inject arbitrary text into log files or bypass intended address parsing via a crafted header.

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CWE-20 - Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Advisory Timeline

  • Published