A vulnerability, which was classified as critical, has been found in Ruby on Rails 3.0.5 (Programming Language Software). This issue affects some unknown functionality in the library actionpack/lib/action_dispatch/middleware/remote_ip.rb. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. 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. Impacted is integrity. The summary by CVE is:

The to_s method in actionpack/lib/action_dispatch/middleware/remote_ip.rb in Ruby on Rails 3.0.5 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.

The weakness was presented 08/29/2011 (oss-sec). It is possible to read the advisory at openwall.com. The identification of this vulnerability is CVE-2011-3187. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

See 58402, 58401, 58400 and 58399 for similar entries.

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• Programming Language Software

Name

• Ruby on Rails

Version

• 3.0.5

License

• open-source

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• 🔍

CPE 2.2info

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• 🔍

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