CVE-2009-2422

CRITICAL9.8EPSS 0.40%

rails vulnerable to improper authentication

Published: 10/24/2017Modified: 4/28/2026

Also known as:GHSA-rxq3-gm4p-5fj4DEBIAN-CVE-2009-2422

Description

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.

Affected packages (2)

Debian/railsfrom 0, < 2.3.5-1
RubyGems/railsfrom 0, < 2.3.3

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	CRITICAL9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (10)

ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2009-2422
ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2009-2422
WEBhttp://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html
WEBhttp://n8.tumblr.com/post/117477059/security-hole-found-in-rails-2-3s
WEBhttps://exchange.xforce.ibmcloud.com/vulnerabilities/51528
WEBhttps://github.com/rubysec/ruby-advisory-db/blob/master/gems/rails/CVE-2009-2422.yml
WEBhttp://support.apple.com/kb/HT4077
WEBhttps://web.archive.org/web/20090711160153/http://secunia.com/advisories/35702
WEBhttps://web.archive.org/web/20200229192617/http://www.securityfocus.com/bid/35579
WEBhttp://weblog.rubyonrails.org/2009/6/3/security-problem-with-authenticate_with_http_digest