CVE-2011-3187

Rails < 2.3.13 - Improper Input Validation

Title source: rule

Description

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.

Exploits (1)

exploitdb WORKING POC VERIFIED

by Jimmy Bandit · rubyremotemultiple

https://www.exploit-db.com/exploits/35352

View Code ZIP pw:eip

References (9)

[Third Party Advisory] http://archives.neohapsis.com/archives/fulldisclosure/2011-02/0337.html

[Exploit] http://webservsec.blogspot.com/2011/02/ruby-on-rails-vulnerability.html

[Patch] http://www.openwall.com/lists/oss-security/2011/08/17/1

[Patch] http://www.openwall.com/lists/oss-security/2011/08/19/11

[Patch] http://www.openwall.com/lists/oss-security/2011/08/20/1

[Patch] http://www.openwall.com/lists/oss-security/2011/08/22/13

[Exploit] http://www.openwall.com/lists/oss-security/2011/08/22/14

[Patch] http://www.openwall.com/lists/oss-security/2011/08/22/5

[Exploit] https://bugzilla.novell.com/show_bug.cgi?id=673010

Scores

EPSS 0.0905

EPSS Percentile 92.7%

Details

CWE

CWE-20

Status published

Products (2)

rubygems/actionpack 2.3.0 - 2.3.13RubyGems

rubyonrails/rails 3.0.5

Published Aug 29, 2011

Tracked Since Feb 18, 2026