CVE-2009-2422

HIGH

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.

References

http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html

http://n8.tumblr.com/post/117477059/security-hole-found-in-rails-2-3s

http://secunia.com/advisories/35702

http://support.apple.com/kb/HT4077

http://weblog.rubyonrails.org/2009/6/3/security-problem-with-authenticate_with_http_digest

http://www.securityfocus.com/bid/35579

http://www.vupen.com/english/advisories/2009/1802

https://exchange.xforce.ibmcloud.com/vulnerabilities/51528

Details

Source: MITRE

Published: 2009-07-10

Updated: 2017-08-17

Type: CWE-287

Risk Information

CVSS v2.0

Base Score: 7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH