CVE-2009-2422

CriticalCVSS 9.8/10Last modified Jun 16, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-287

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.htmlMailing List
http://n8.tumblr.com/post/117477059/security-hole-found-in-rails-2-3sExploit, Patch
http://secunia.com/advisories/35702Broken Link, Vendor Advisory
http://support.apple.com/kb/HT4077Third Party Advisory
http://weblog.rubyonrails.org/2009/6/3/security-problem-with-authenticate_with_http_digestPatch
http://www.securityfocus.com/bid/35579Broken Link, Patch, Third Party Advisory, VDB Entry
http://www.vupen.com/english/advisories/2009/1802Broken Link, Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/51528Third Party Advisory, VDB Entry
http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.htmlMailing List
http://n8.tumblr.com/post/117477059/security-hole-found-in-rails-2-3sExploit, Patch
http://secunia.com/advisories/35702Broken Link, Vendor Advisory
http://support.apple.com/kb/HT4077Third Party Advisory
http://weblog.rubyonrails.org/2009/6/3/security-problem-with-authenticate_with_http_digestPatch
http://www.securityfocus.com/bid/35579Broken Link, Patch, Third Party Advisory, VDB Entry
http://www.vupen.com/english/advisories/2009/1802Broken Link, Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/51528Third Party Advisory, VDB Entry

Timeline

Published: Jul 10, 2009
Last modified: Jun 16, 2026
NVD status: Modified

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