Executive Summary

Name CVE-2009-2422 First vendor Publication 2009-07-10
Vendor Cve Last vendor Modification 2017-08-17

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


The example code for the digest authentication functionality (http_authentication.rb) in Ruby on Rails before 2.3.3 defines an authenticate_or_request_with_http_digest block that returns nil instead of false when the user does not exist, which allows context-dependent attackers to bypass authentication for applications that are derived from this example by sending an invalid username without a password.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2422

CAPEC : Common Attack Pattern Enumeration & Classification

Id Name
CAPEC-22 Exploiting Trust in Client (aka Make the Client Invisible)
CAPEC-57 Utilizing REST's Trust in the System Resource to Register Man in the Middle
CAPEC-94 Man in the Middle Attack
CAPEC-114 Authentication Abuse

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-287 Improper Authentication

CPE : Common Platform Enumeration

Application 1

OpenVAS Exploits

Date Description
2010-05-12 Name : Mac OS X 10.6.3 Update / Mac OS X Security Update 2010-002
File : nvt/macosx_upd_10_6_3_secupd_2010-002.nasl
2009-12-30 Name : Gentoo Security Advisory GLSA 200912-02 (rails)
File : nvt/glsa_200912_02.nasl
2009-07-17 Name : Ruby on Rails Authentication Bypass Vulnerability
File : nvt/gb_ruby_rails_auth_bypass_vuln.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
55664 Ruby on Rails HTTP Digest Authentication nil User Bypass

Nessus® Vulnerability Scanner

Date Description
2010-03-29 Name : The remote host is missing a Mac OS X update that fixes various security issues.
File : macosx_10_6_3.nasl - Type : ACT_GATHER_INFO
2010-03-29 Name : The remote host is missing a Mac OS X update that fixes various security issues.
File : macosx_SecUpd2010-002.nasl - Type : ACT_GATHER_INFO
2009-12-22 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-200912-02.nasl - Type : ACT_GATHER_INFO
2009-07-21 Name : The remote web server contains an application that is prone to an authenticat...
File : ror_http_digest_bypass.nasl - Type : ACT_ATTACK

Sources (Detail)

Source Url
APPLE http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html
BID http://www.securityfocus.com/bid/35579
CONFIRM http://support.apple.com/kb/HT4077
MISC http://n8.tumblr.com/post/117477059/security-hole-found-in-rails-2-3s
SECUNIA http://secunia.com/advisories/35702
VUPEN http://www.vupen.com/english/advisories/2009/1802
XF https://exchange.xforce.ibmcloud.com/vulnerabilities/51528

Alert History

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Date Informations
2020-05-23 00:24:01
  • Multiple Updates
2017-08-17 09:22:38
  • Multiple Updates
2016-04-26 18:57:56
  • Multiple Updates
2014-02-17 10:50:44
  • Multiple Updates
2013-05-10 23:53:49
  • Multiple Updates