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CVE-2011-3187

Date: August 29, 2011

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.

Language: Ruby

Severity Score

Related Resources (14)

http://archives.neohapsis.com/archives/fulldisclosure/2011-02/0337.html
http://www.openwall.com/lists/oss-security/2011/08/22/13
http://www.openwall.com/lists/oss-security/2011/08/22/14
http://www.openwall.com/lists/oss-security/2011/08/22/5
https://bugzilla.novell.com/show_bug.cgi?id=673010
http://www.openwall.com/lists/oss-security/2011/08/17/1
https://nvd.nist.gov/vuln/detail/CVE-2011-3187
http://www.openwall.com/lists/oss-security/2011/08/19/11
http://webservsec.blogspot.com/2011/02/ruby-on-rails-vulnerability.html
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2011-3187.yml
https://github.com/rails/rails
https://web.archive.org/web/20111209181000/http://archives.neohapsis.com/archives/fulldisclosure/2011-02/0337.html
http://www.openwall.com/lists/oss-security/2011/08/20/1
https://www.mend.io/vulnerability-database/CVE-2011-3187

Severity Score

Weakness Type (CWE)

Improper Input Validation

CWE-20

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): LOW
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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