ADVISORIES

• CVE-2009-2422 (NVD)
• GHSA-rxq3-gm4p-5fj4
• Vendor Advisory

GEM

rails

FRAMEWORK

Ruby on Rails

SEVERITY

CVSS v2.0: 7.5 (High)

PATCHED VERSIONS

• >= 2.3.3

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.

RELATED

• https://nvd.nist.gov/vuln/detail/CVE-2009-2422
• http://weblog.rubyonrails.org/2009/6/3/security-problem-with-authenticate_with_http_digest
• https://exchange.xforce.ibmcloud.com/vulnerabilities/51528
• https://github.com/advisories/GHSA-rxq3-gm4p-5fj4
• https://lists.apple.com/archives/security-announce/2010/Mar/msg00001.html
• http://support.apple.com/kb/HT4077
• http://n8.tumblr.com/post/117477059/security-hole-found-in-rails-2-3s